91400527044 has 72 divisors (see below), whose sum is σ = 232749480600. Its totient is φ = 30241728000.

The previous prime is 91400527033. The next prime is 91400527051. The reversal of 91400527044 is 44072500419.

It is a happy number.

91400527044 is a `hidden beast` number, since 91 + 4 + 0 + 0 + 527 + 0 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28379445444 + 63021081600 = 168462^2 + 251040^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9226494 + ... + 9236394.

It is an arithmetic number, because the mean of its divisors is an integer number (3232631675).

Almost surely, 2^91400527044 is an apocalyptic number.

It is an amenable number.

91400527044 is an abundant number, since it is smaller than the sum of its proper divisors (141348953556).

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

91400527044 is a wasteful number, since it uses less digits than its factorization.

91400527044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11781 (or 11776 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 91400527044 in words is "ninety-one billion, four hundred million, five hundred twenty-seven thousand, forty-four".