91734515712 has 448 divisors, whose sum is σ = 313295385600. Its totient is φ = 25984696320.

The previous prime is 91734515701. The next prime is 91734515723. The reversal of 91734515712 is 21751543719.

91734515712 is a `hidden beast` number, since 9 + 1 + 73 + 4 + 5 + 1 + 571 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (91734515701) and next prime (91734515723).

It is a tau number, because it is divible by the number of its divisors (448).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277143387 + ... + 277143717.

Almost surely, 2^91734515712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91734515712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156647692800).

91734515712 is an abundant number, since it is smaller than the sum of its proper divisors (221560869888).

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

91734515712 is a wasteful number, since it uses less digits than its factorization.

91734515712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 522 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The spelling of 91734515712 in words is "ninety-one billion, seven hundred thirty-four million, five hundred fifteen thousand, seven hundred twelve".