91364095505 has 16 divisors (see below), whose sum is σ = 112056485184. Its totient is φ = 71495668800.

The previous prime is 91364095453. The next prime is 91364095553. The reversal of 91364095505 is 50559046319.

It is not a de Polignac number, because 91364095505 - 2²² = 91359901201 is a prime.

It is a super-2 number, since 2×91364095505² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91364095505.

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, 1047959 + ... + 1131788.

It is an arithmetic number, because the mean of its divisors is an integer number (7003530324).

Almost surely, 2^91364095505 is an apocalyptic number.

It is an amenable number.

91364095505 is a deficient number, since it is larger than the sum of its proper divisors (20692389679).

91364095505 is a wasteful number, since it uses less digits than its factorization.

91364095505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179936.

The product of its (nonzero) digits is 729000, while the sum is 47.

The spelling of 91364095505 in words is "ninety-one billion, three hundred sixty-four million, ninety-five thousand, five hundred five".