16985120529 has 64 divisors (see below), whose sum is σ = 26547865344. Its totient is φ = 9563774976.

The previous prime is 16985120501. The next prime is 16985120533. The reversal of 16985120529 is 92502158961.

It is not a de Polignac number, because 16985120529 - 2¹⁷ = 16984989457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16985120599) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6641319 + ... + 6643875.

It is an arithmetic number, because the mean of its divisors is an integer number (414810396).

Almost surely, 2^16985120529 is an apocalyptic number.

It is an amenable number.

16985120529 is a deficient number, since it is larger than the sum of its proper divisors (9562744815).

16985120529 is a wasteful number, since it uses less digits than its factorization.

16985120529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866.

The product of its (nonzero) digits is 388800, while the sum is 48.

The spelling of 16985120529 in words is "sixteen billion, nine hundred eighty-five million, one hundred twenty thousand, five hundred twenty-nine".