32016997656 has 320 divisors, whose sum is σ = 106343086080. Its totient is φ = 8843178240.

The previous prime is 32016997619. The next prime is 32016997739. The reversal of 32016997656 is 65679961023.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 34169220 + ... + 34170156.

It is an arithmetic number, because the mean of its divisors is an integer number (332322144).

Almost surely, 2^32016997656 is an apocalyptic number.

32016997656 is a gapful number since it is divisible by the number (36) 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 32016997656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53171543040).

32016997656 is an abundant number, since it is smaller than the sum of its proper divisors (74326088424).

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

32016997656 is an frugal number, since it uses more digits than its factorization.

32016997656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 32016997656 in words is "thirty-two billion, sixteen million, nine hundred ninety-seven thousand, six hundred fifty-six".