91170361161215 has 24 divisors (see below), whose sum is σ = 127266817127760. Its totient is φ = 62516605189248.

The previous prime is 91170361161211. The next prime is 91170361161247. The reversal of 91170361161215 is 51216116307119.

It is not a de Polignac number, because 91170361161215 - 2² = 91170361161211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91170361161211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110968451 + ... + 111787019.

It is an arithmetic number, because the mean of its divisors is an integer number (5302784046990).

Almost surely, 2^{91170361161215} is an apocalyptic number.

91170361161215 is a deficient number, since it is larger than the sum of its proper divisors (36096455966545).

91170361161215 is a wasteful number, since it uses less digits than its factorization.

91170361161215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273191 (or 1273184 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 91170361161215 in words is "ninety-one trillion, one hundred seventy billion, three hundred sixty-one million, one hundred sixty-one thousand, two hundred fifteen".