91740488274 has 64 divisors (see below), whose sum is σ = 204664320000. Its totient is φ = 30460914000.

The previous prime is 91740488249. The next prime is 91740488297. The reversal of 91740488274 is 47288404719.

91740488274 is a `hidden beast` number, since 91 + 7 + 4 + 0 + 488 + 2 + 74 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 91740488274.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16989427 + ... + 16994825.

It is an arithmetic number, because the mean of its divisors is an integer number (3197880000).

Almost surely, 2^91740488274 is an apocalyptic number.

91740488274 is an abundant number, since it is smaller than the sum of its proper divisors (112923831726).

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

91740488274 is a wasteful number, since it uses less digits than its factorization.

91740488274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580 (or 6574 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 91740488274 in words is "ninety-one billion, seven hundred forty million, four hundred eighty-eight thousand, two hundred seventy-four".