91051015060 has 24 divisors (see below), whose sum is σ = 191219565096. Its totient is φ = 36418037760.

The previous prime is 91051015049. The next prime is 91051015061. The reversal of 91051015060 is 6051015019.

It can be written as a sum of positive squares in 4 ways, for example, as 27676980496 + 63374034564 = 166364^2 + 251742^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91051015061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185580 + ... + 465340.

It is an arithmetic number, because the mean of its divisors is an integer number (7967481879).

Almost surely, 2^91051015060 is an apocalyptic number.

It is an amenable number.

91051015060 is an abundant number, since it is smaller than the sum of its proper divisors (100168550036).

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

91051015060 is a wasteful number, since it uses less digits than its factorization.

91051015060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296043 (or 296041 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 28.

The spelling of 91051015060 in words is "ninety-one billion, fifty-one million, fifteen thousand, sixty".