997608236832 has 60 divisors (see below), whose sum is σ = 2933938120806. Its totient is φ = 332536078080.

The previous prime is 997608236791. The next prime is 997608236869. The reversal of 997608236832 is 238632806799.

It can be written as a sum of positive squares in only one way, i.e., 953271038736 + 44337198096 = 976356^2 + 210564^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 997608236832.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 192437269 + ... + 192442452.

Almost surely, 2^997608236832 is an apocalyptic number.

It is an amenable number.

997608236832 is an abundant number, since it is smaller than the sum of its proper divisors (1936329883974).

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

997608236832 is a wasteful number, since it uses less digits than its factorization.

997608236832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384879743 (or 384879726 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 997608236832 in words is "nine hundred ninety-seven billion, six hundred eight million, two hundred thirty-six thousand, eight hundred thirty-two".