91512819325136 has 40 divisors (see below), whose sum is σ = 193601144697984. Its totient is φ = 41558817340160.

The previous prime is 91512819325073. The next prime is 91512819325183. The reversal of 91512819325136 is 63152391821519.

It is a super-3 number, since 3×91512819325136³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236798360 + ... + 237184503.

Almost surely, 2^{91512819325136} is an apocalyptic number.

It is an amenable number.

91512819325136 is an abundant number, since it is smaller than the sum of its proper divisors (102088325372848).

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

91512819325136 is a wasteful number, since it uses less digits than its factorization.

91512819325136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473983979 (or 473983973 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 56.

The spelling of 91512819325136 in words is "ninety-one trillion, five hundred twelve billion, eight hundred nineteen million, three hundred twenty-five thousand, one hundred thirty-six".