67978813501032 has 128 divisors (see below), whose sum is σ = 204548441011200. Its totient is φ = 18391201003008.

The previous prime is 67978813500919. The next prime is 67978813501087. The reversal of 67978813501032 is 23010531887976.

It is a happy number.

It is a super-2 number, since 2×67978813501032² (a number of 28 digits) contains 22 as substring.

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, 1216948 + ... + 11723420.

It is an arithmetic number, because the mean of its divisors is an integer number (1598034695400).

Almost surely, 2^{67978813501032} 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 67978813501032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102274220505600).

67978813501032 is an abundant number, since it is smaller than the sum of its proper divisors (136569627510168).

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

67978813501032 is a wasteful number, since it uses less digits than its factorization.

67978813501032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10508535 (or 10508531 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 67978813501032 in words is "sixty-seven trillion, nine hundred seventy-eight billion, eight hundred thirteen million, five hundred one thousand, thirty-two".