91688674613760 has 240 divisors, whose sum is σ = 362907049355136. Its totient is φ = 20957411303424.

The previous prime is 91688674613713. The next prime is 91688674613779. The reversal of 91688674613760 is 6731647688619.

It is a happy number.

91688674613760 is a `hidden beast` number, since 9 + 16 + 8 + 8 + 67 + 461 + 37 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 284091804 + ... + 284414363.

Almost surely, 2^{91688674613760} is an apocalyptic number.

91688674613760 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91688674613760 is an abundant number, since it is smaller than the sum of its proper divisors (271218374741376).

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

91688674613760 is a wasteful number, since it uses less digits than its factorization.

91688674613760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568506203 (or 568506184 counting only the distinct ones).

The product of its (nonzero) digits is 438939648, while the sum is 72.

The spelling of 91688674613760 in words is "ninety-one trillion, six hundred eighty-eight billion, six hundred seventy-four million, six hundred thirteen thousand, seven hundred sixty".