91937922480 has 280 divisors, whose sum is σ = 321292159200. Its totient is φ = 24455208960.

The previous prime is 91937922457. The next prime is 91937922493. The reversal of 91937922480 is 8422973919.

91937922480 is a `hidden beast` number, since 9 + 1 + 93 + 79 + 2 + 2 + 480 = 666.

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 55 ways as a sum of consecutive naturals, for example, 26183925 + ... + 26187435.

Almost surely, 2^91937922480 is an apocalyptic number.

91937922480 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 91937922480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160646079600).

91937922480 is an abundant number, since it is smaller than the sum of its proper divisors (229354236720).

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

91937922480 is a wasteful number, since it uses less digits than its factorization.

91937922480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991 (or 3970 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 91937922480 in words is "ninety-one billion, nine hundred thirty-seven million, nine hundred twenty-two thousand, four hundred eighty".