91505825376 has 96 divisors (see below), whose sum is σ = 280119974400. Its totient is φ = 26144512128.

The previous prime is 91505825351. The next prime is 91505825377. The reversal of 91505825376 is 67352850519.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91505825377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1356556 + ... + 1422411.

It is an arithmetic number, because the mean of its divisors is an integer number (2917916400).

Almost surely, 2^91505825376 is an apocalyptic number.

91505825376 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

91505825376 is an abundant number, since it is smaller than the sum of its proper divisors (188614149024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91505825376 is a wasteful number, since it uses less digits than its factorization.

91505825376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2779001 (or 2778979 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 51.

The spelling of 91505825376 in words is "ninety-one billion, five hundred five million, eight hundred twenty-five thousand, three hundred seventy-six".