16636755517408 has 48 divisors (see below), whose sum is σ = 35273554033536. Its totient is φ = 7678408296960.

The previous prime is 16636755517331. The next prime is 16636755517511. The reversal of 16636755517408 is 80471555763661.

It is a self number, because there is not a number n which added to its sum of digits gives 16636755517408.

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, 42712785 + ... + 43100527.

It is an arithmetic number, because the mean of its divisors is an integer number (734865709032).

Almost surely, 2^{16636755517408} is an apocalyptic number.

It is an amenable number.

16636755517408 is an abundant number, since it is smaller than the sum of its proper divisors (18636798516128).

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

16636755517408 is a wasteful number, since it uses less digits than its factorization.

16636755517408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490907 (or 490899 counting only the distinct ones).

The product of its (nonzero) digits is 127008000, while the sum is 64.

The spelling of 16636755517408 in words is "sixteen trillion, six hundred thirty-six billion, seven hundred fifty-five million, five hundred seventeen thousand, four hundred eight".