91023311332019 has 24 divisors (see below), whose sum is σ = 100916735141376. Its totient is φ = 82033246209200.

The previous prime is 91023311331937. The next prime is 91023311332021.

91023311332019 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 91023311332019 - 2²⁰ = 91023310283443 is a prime.

It is a super-2 number, since 2×91023311332019² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91023311332619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12660662 + ... + 18502404.

It is an arithmetic number, because the mean of its divisors is an integer number (4204863964224).

Almost surely, 2^{91023311332019} is an apocalyptic number.

91023311332019 is a deficient number, since it is larger than the sum of its proper divisors (9893423809357).

91023311332019 is a wasteful number, since it uses less digits than its factorization.

91023311332019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5842879 (or 5842868 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 38.

The spelling of 91023311332019 in words is "ninety-one trillion, twenty-three billion, three hundred eleven million, three hundred thirty-two thousand, nineteen".