16997975840 has 48 divisors (see below), whose sum is σ = 40167881208. Its totient is φ = 6797469696.

The previous prime is 16997975837. The next prime is 16997975843. The reversal of 16997975840 is 4857979961.

It is an interprime number because it is at equal distance from previous prime (16997975837) and next prime (16997975843).

It can be written as a sum of positive squares in 4 ways, for example, as 16984344976 + 13630864 = 130324^2 + 3692^2 .

It is not an unprimeable number, because it can be changed into a prime (16997975843) 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, 759044 + ... + 781116.

Almost surely, 2^16997975840 is an apocalyptic number.

16997975840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16997975840 is an abundant number, since it is smaller than the sum of its proper divisors (23169905368).

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

16997975840 is a wasteful number, since it uses less digits than its factorization.

16997975840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26901 (or 26893 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 65.

The spelling of 16997975840 in words is "sixteen billion, nine hundred ninety-seven million, nine hundred seventy-five thousand, eight hundred forty".