997645149760 has 112 divisors (see below), whose sum is σ = 2715437206656. Its totient is φ = 341997207552.

The previous prime is 997645149749. The next prime is 997645149769. The reversal of 997645149760 is 67941546799.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (997645149769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16283344 + ... + 16344496.

Almost surely, 2^997645149760 is an apocalyptic number.

It is an amenable number.

997645149760 is an abundant number, since it is smaller than the sum of its proper divisors (1717792056896).

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

997645149760 is a wasteful number, since it uses less digits than its factorization.

997645149760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68460 (or 68450 counting only the distinct ones).

The product of its (nonzero) digits is 102876480, while the sum is 67.

The spelling of 997645149760 in words is "nine hundred ninety-seven billion, six hundred forty-five million, one hundred forty-nine thousand, seven hundred sixty".