91296906624 has 1440 divisors, whose sum is σ = 377227552680. Its totient is φ = 21598617600.

The previous prime is 91296906577. The next prime is 91296906647. The reversal of 91296906624 is 42660969219.

It is a happy number.

91296906624 is a `hidden beast` number, since 9 + 1 + 2 + 9 + 6 + 9 + 0 + 6 + 624 = 666.

It is a super-2 number, since 2×91296906624² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 2945061489 + ... + 2945061519.

Almost surely, 2^91296906624 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 91296906624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188613776340).

91296906624 is an abundant number, since it is smaller than the sum of its proper divisors (285930646056).

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

91296906624 is a wasteful number, since it uses less digits than its factorization.

91296906624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 91296906624 in words is "ninety-one billion, two hundred ninety-six million, nine hundred six thousand, six hundred twenty-four".