16977510121 has 12 divisors (see below), whose sum is σ = 20096711236. Its totient is φ = 14246860320.

The previous prime is 16977510103. The next prime is 16977510157. The reversal of 16977510121 is 12101577961.

It can be written as a sum of positive squares in 2 ways, for example, as 10243666521 + 6733843600 = 101211^2 + 82060^2 .

It is not a de Polignac number, because 16977510121 - 2⁷ = 16977509993 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16977510101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5394966 + ... + 5398111.

Almost surely, 2^16977510121 is an apocalyptic number.

16977510121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16977510121 is a deficient number, since it is larger than the sum of its proper divisors (3119201115).

16977510121 is a wasteful number, since it uses less digits than its factorization.

16977510121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10793112 (or 10793101 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 40.

The spelling of 16977510121 in words is "sixteen billion, nine hundred seventy-seven million, five hundred ten thousand, one hundred twenty-one".