91164012528 has 20 divisors (see below), whose sum is σ = 235507032488. Its totient is φ = 30388004160.

The previous prime is 91164012479. The next prime is 91164012559. The reversal of 91164012528 is 82521046119.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949625083 + ... + 949625178.

Almost surely, 2^91164012528 is an apocalyptic number.

It is an amenable number.

91164012528 is an abundant number, since it is smaller than the sum of its proper divisors (144343019960).

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

91164012528 is a wasteful number, since it uses less digits than its factorization.

91164012528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899250272 (or 1899250266 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 91164012528 in words is "ninety-one billion, one hundred sixty-four million, twelve thousand, five hundred twenty-eight".