16497645732920 has 64 divisors (see below), whose sum is σ = 40566922524000. Its totient is φ = 5988373358080.

The previous prime is 16497645732857. The next prime is 16497645732961. The reversal of 16497645732920 is 2923754679461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33412595 + ... + 33902754.

Almost surely, 2^{16497645732920} is an apocalyptic number.

16497645732920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16497645732920 is an abundant number, since it is smaller than the sum of its proper divisors (24069276791080).

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

16497645732920 is a wasteful number, since it uses less digits than its factorization.

16497645732920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67315928 (or 67315924 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 65.

The spelling of 16497645732920 in words is "sixteen trillion, four hundred ninety-seven billion, six hundred forty-five million, seven hundred thirty-two thousand, nine hundred twenty".