16537197804 has 24 divisors (see below), whose sum is σ = 39629682288. Its totient is φ = 5363415360.

The previous prime is 16537197791. The next prime is 16537197881. The reversal of 16537197804 is 40879173561.

It is a happy number.

It is a super-2 number, since 2×16537197804² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18622527 + ... + 18623414.

It is an arithmetic number, because the mean of its divisors is an integer number (1651236762).

Almost surely, 2^16537197804 is an apocalyptic number.

It is an amenable number.

16537197804 is an abundant number, since it is smaller than the sum of its proper divisors (23092484484).

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

16537197804 is a wasteful number, since it uses less digits than its factorization.

16537197804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37245985 (or 37245983 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

It can be divided in two parts, 165371 and 97804, that added together give a triangular number (263175 = T₇₂₅).

The spelling of 16537197804 in words is "sixteen billion, five hundred thirty-seven million, one hundred ninety-seven thousand, eight hundred four".