30531252664 has 128 divisors (see below), whose sum is σ = 67884480000. Its totient is φ = 12727052800.

The previous prime is 30531252649. The next prime is 30531252671. The reversal of 30531252664 is 46625213503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8743959 + ... + 8747449.

It is an arithmetic number, because the mean of its divisors is an integer number (530347500).

Almost surely, 2^30531252664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30531252664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33942240000).

30531252664 is an abundant number, since it is smaller than the sum of its proper divisors (37353227336).

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

30531252664 is a wasteful number, since it uses less digits than its factorization.

30531252664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709 (or 3705 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 30531252664 in words is "thirty billion, five hundred thirty-one million, two hundred fifty-two thousand, six hundred sixty-four".