16173664536 has 32 divisors (see below), whose sum is σ = 40440133440. Its totient is φ = 5390425248.

The previous prime is 16173664499. The next prime is 16173664541. The reversal of 16173664536 is 63546637161.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 129255 + ... + 221481.

It is an arithmetic number, because the mean of its divisors is an integer number (1263754170).

Almost surely, 2^16173664536 is an apocalyptic number.

It is an amenable number.

16173664536 is an abundant number, since it is smaller than the sum of its proper divisors (24266468904).

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

16173664536 is a wasteful number, since it uses less digits than its factorization.

16173664536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99543 (or 99539 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 48.

The spelling of 16173664536 in words is "sixteen billion, one hundred seventy-three million, six hundred sixty-four thousand, five hundred thirty-six".