2158546667431 has 16 divisors (see below), whose sum is σ = 2691209875968. Its totient is φ = 1681962660000.

The previous prime is 2158546667411. The next prime is 2158546667447. The reversal of 2158546667431 is 1347666458512.

It is not a de Polignac number, because 2158546667431 - 2²⁵ = 2158513112999 is a prime.

It is a super-2 number, since 2×2158546667431² (a number of 25 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 (2158546667411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8479401 + ... + 8730253.

It is an arithmetic number, because the mean of its divisors is an integer number (168200617248).

Almost surely, 2^{2158546667431} is an apocalyptic number.

2158546667431 is a deficient number, since it is larger than the sum of its proper divisors (532663208537).

2158546667431 is a wasteful number, since it uses less digits than its factorization.

2158546667431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362622.

The product of its digits is 29030400, while the sum is 58.

The spelling of 2158546667431 in words is "two trillion, one hundred fifty-eight billion, five hundred forty-six million, six hundred sixty-seven thousand, four hundred thirty-one".