91375105155 has 16 divisors (see below), whose sum is σ = 151241554080. Its totient is φ = 47052927488.

The previous prime is 91375105127. The next prime is 91375105177. The reversal of 91375105155 is 55150157319.

It is a cyclic number.

It is not a de Polignac number, because 91375105155 - 2¹⁷ = 91374974083 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105028422 + ... + 105029291.

It is an arithmetic number, because the mean of its divisors is an integer number (9452597130).

Almost surely, 2^91375105155 is an apocalyptic number.

91375105155 is a deficient number, since it is larger than the sum of its proper divisors (59866448925).

91375105155 is a wasteful number, since it uses less digits than its factorization.

91375105155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210057750.

The product of its (nonzero) digits is 118125, while the sum is 42.

The spelling of 91375105155 in words is "ninety-one billion, three hundred seventy-five million, one hundred five thousand, one hundred fifty-five".