91361792392831 has 4 divisors (see below), whose sum is σ = 91484755774992. Its totient is φ = 91238829010672.

The previous prime is 91361792392771. The next prime is 91361792392847. The reversal of 91361792392831 is 13829329716319.

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 91361792392831 - 2³⁵ = 91327432654463 is a prime.

It is a super-2 number, since 2×91361792392831² (a number of 29 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 (91361792398831) 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, 61481689966 + ... + 61481691451.

It is an arithmetic number, because the mean of its divisors is an integer number (22871188943748).

Almost surely, 2^{91361792392831} is an apocalyptic number.

91361792392831 is a deficient number, since it is larger than the sum of its proper divisors (122963382161).

91361792392831 is a wasteful number, since it uses less digits than its factorization.

91361792392831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122963382160.

The product of its digits is 26453952, while the sum is 64.

The spelling of 91361792392831 in words is "ninety-one trillion, three hundred sixty-one billion, seven hundred ninety-two million, three hundred ninety-two thousand, eight hundred thirty-one".