91767157671 has 32 divisors (see below), whose sum is σ = 140983779328. Its totient is φ = 52008933600.

The previous prime is 91767157633. The next prime is 91767157711. The reversal of 91767157671 is 17675176719.

It is not a de Polignac number, because 91767157671 - 2¹⁵ = 91767124903 is a prime.

It is a super-2 number, since 2×91767157671² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91767157171) 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, 2016450 + ... + 2061456.

It is an arithmetic number, because the mean of its divisors is an integer number (4405743104).

Almost surely, 2^91767157671 is an apocalyptic number.

91767157671 is a deficient number, since it is larger than the sum of its proper divisors (49216621657).

91767157671 is a wasteful number, since it uses less digits than its factorization.

91767157671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45811.

The product of its digits is 3889620, while the sum is 57.

The spelling of 91767157671 in words is "ninety-one billion, seven hundred sixty-seven million, one hundred fifty-seven thousand, six hundred seventy-one".