91792376280 has 384 divisors, whose sum is σ = 337841280000. Its totient is φ = 22152049920.

The previous prime is 91792376251. The next prime is 91792376297. The reversal of 91792376280 is 8267329719.

91792376280 is a `hidden beast` number, since 9 + 1 + 7 + 9 + 2 + 3 + 7 + 628 + 0 = 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 95 ways as a sum of consecutive naturals, for example, 31231051 + ... + 31233989.

It is an arithmetic number, because the mean of its divisors is an integer number (879795000).

Almost surely, 2^91792376280 is an apocalyptic number.

91792376280 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 91792376280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168920640000).

91792376280 is an abundant number, since it is smaller than the sum of its proper divisors (246048903720).

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

91792376280 is a wasteful number, since it uses less digits than its factorization.

91792376280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220 (or 3199 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 91792376280 in words is "ninety-one billion, seven hundred ninety-two million, three hundred seventy-six thousand, two hundred eighty".