91612407600 has 360 divisors, whose sum is σ = 368462345472. Its totient is φ = 20644646400.

The previous prime is 91612407547. The next prime is 91612407617. The reversal of 91612407600 is 670421619.

91612407600 is a `hidden beast` number, since 9 + 1 + 6 + 1 + 2 + 40 + 7 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1763599 + ... + 1814801.

Almost surely, 2^91612407600 is an apocalyptic number.

91612407600 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91612407600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184231172736).

91612407600 is an abundant number, since it is smaller than the sum of its proper divisors (276849937872).

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

91612407600 is a wasteful number, since it uses less digits than its factorization.

91612407600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51305 (or 51291 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 91612407600 in words is "ninety-one billion, six hundred twelve million, four hundred seven thousand, six hundred".