33638044032 has 192 divisors, whose sum is σ = 97772875200. Its totient is φ = 11100367872.

The previous prime is 33638044031. The next prime is 33638044057. The reversal of 33638044032 is 23044083633.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×33638044032² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33638044031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80281519 + ... + 80281937.

It is an arithmetic number, because the mean of its divisors is an integer number (509233725).

Almost surely, 2^33638044032 is an apocalyptic number.

33638044032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33638044032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48886437600).

33638044032 is an abundant number, since it is smaller than the sum of its proper divisors (64134831168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33638044032 is a wasteful number, since it uses less digits than its factorization.

33638044032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 33638044032 in words is "thirty-three billion, six hundred thirty-eight million, forty-four thousand, thirty-two".