91627249831 has 32 divisors (see below), whose sum is σ = 104672514240. Its totient is φ = 79612194816.

The previous prime is 91627249823. The next prime is 91627249841. The reversal of 91627249831 is 13894272619.

It is a cyclic number.

It is not a de Polignac number, because 91627249831 - 2³ = 91627249823 is a prime.

It is a super-2 number, since 2×91627249831² (a number of 23 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 (91627249801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2431425 + ... + 2468821.

It is an arithmetic number, because the mean of its divisors is an integer number (3271016070).

Almost surely, 2^91627249831 is an apocalyptic number.

91627249831 is a deficient number, since it is larger than the sum of its proper divisors (13045264409).

91627249831 is a wasteful number, since it uses less digits than its factorization.

91627249831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37603.

The product of its digits is 1306368, while the sum is 52.

The spelling of 91627249831 in words is "ninety-one billion, six hundred twenty-seven million, two hundred forty-nine thousand, eight hundred thirty-one".