32397634656 has 72 divisors (see below), whose sum is σ = 92608293960. Its totient is φ = 10743238656.

The previous prime is 32397634649. The next prime is 32397634657. The reversal of 32397634656 is 65643679323.

It is a happy number.

32397634656 is a `hidden beast` number, since 32 + 3 + 97 + 63 + 465 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32397634657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235846 + ... + 347013.

It is an arithmetic number, because the mean of its divisors is an integer number (1286226305).

Almost surely, 2^32397634656 is an apocalyptic number.

32397634656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

32397634656 is an abundant number, since it is smaller than the sum of its proper divisors (60210659304).

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

32397634656 is a wasteful number, since it uses less digits than its factorization.

32397634656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583068 (or 583057 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 54.

The spelling of 32397634656 in words is "thirty-two billion, three hundred ninety-seven million, six hundred thirty-four thousand, six hundred fifty-six".