91049070924 has 120 divisors (see below), whose sum is σ = 280798307328. Its totient is φ = 25174838880.

The previous prime is 91049070923. The next prime is 91049070929. The reversal of 91049070924 is 42907094019.

It is a happy number.

91049070924 is a `hidden beast` number, since 9 + 1 + 0 + 490 + 70 + 92 + 4 = 666.

It is a super-2 number, since 2×91049070924² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91049070924.

It is not an unprimeable number, because it can be changed into a prime (91049070923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 577194 + ... + 717809.

Almost surely, 2^91049070924 is an apocalyptic number.

It is an amenable number.

91049070924 is an abundant number, since it is smaller than the sum of its proper divisors (189749236404).

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

91049070924 is a wasteful number, since it uses less digits than its factorization.

91049070924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295057 (or 1295046 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 91049070924 in words is "ninety-one billion, forty-nine million, seventy thousand, nine hundred twenty-four".