16995877605431 has 4 divisors (see below), whose sum is σ = 16996048994352. Its totient is φ = 16995706216512.

The previous prime is 16995877605409. The next prime is 16995877605491. The reversal of 16995877605431 is 13450677859961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16995877605431 - 2⁴² = 12597831094327 is a prime.

It is a super-2 number, since 2×16995877605431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16995877605491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85545626 + ... + 85744071.

It is an arithmetic number, because the mean of its divisors is an integer number (4249012248588).

Almost surely, 2^{16995877605431} is an apocalyptic number.

16995877605431 is a deficient number, since it is larger than the sum of its proper divisors (171388921).

16995877605431 is an equidigital number, since it uses as much as digits as its factorization.

16995877605431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171388920.

The product of its (nonzero) digits is 342921600, while the sum is 71.

The spelling of 16995877605431 in words is "sixteen trillion, nine hundred ninety-five billion, eight hundred seventy-seven million, six hundred five thousand, four hundred thirty-one".