91065582054 has 12 divisors (see below), whose sum is σ = 197308761156. Its totient is φ = 30355194012.

The previous prime is 91065582017. The next prime is 91065582077. The reversal of 91065582054 is 45028556019.

91065582054 is a `hidden beast` number, since 9 + 1 + 0 + 65 + 582 + 0 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2529599484 + ... + 2529599519.

It is an arithmetic number, because the mean of its divisors is an integer number (16442396763).

Almost surely, 2^91065582054 is an apocalyptic number.

91065582054 is an abundant number, since it is smaller than the sum of its proper divisors (106243179102).

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

91065582054 is a wasteful number, since it uses less digits than its factorization.

91065582054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059199011 (or 5059199008 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 91065582054 in words is "ninety-one billion, sixty-five million, five hundred eighty-two thousand, fifty-four".