16617860818 has 16 divisors (see below), whose sum is σ = 26889992640. Its totient is φ = 7656708816.

The previous prime is 16617860789. The next prime is 16617860843. The reversal of 16617860818 is 81806871661.

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, 529158 + ... + 559681.

It is an arithmetic number, because the mean of its divisors is an integer number (1680624540).

Almost surely, 2^16617860818 is an apocalyptic number.

16617860818 is a deficient number, since it is larger than the sum of its proper divisors (10272131822).

16617860818 is a wasteful number, since it uses less digits than its factorization.

16617860818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089441.

The product of its (nonzero) digits is 774144, while the sum is 52.

The spelling of 16617860818 in words is "sixteen billion, six hundred seventeen million, eight hundred sixty thousand, eight hundred eighteen".