16577686456 has 32 divisors (see below), whose sum is σ = 32581810800. Its totient is φ = 7898607360.

The previous prime is 16577686441. The next prime is 16577686457. The reversal of 16577686456 is 65468677561.

It is a junction number, because it is equal to n+sod(n) for n = 16577686394 and 16577686403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16577686457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573591 + ... + 601798.

Almost surely, 2^16577686456 is an apocalyptic number.

It is an amenable number.

16577686456 is a deficient number, since it is larger than the sum of its proper divisors (16004124344).

16577686456 is a wasteful number, since it uses less digits than its factorization.

16577686456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175479 (or 1175475 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 61.

The spelling of 16577686456 in words is "sixteen billion, five hundred seventy-seven million, six hundred eighty-six thousand, four hundred fifty-six".