91315305776 has 10 divisors (see below), whose sum is σ = 176923404972. Its totient is φ = 45657652880.

The previous prime is 91315305743. The next prime is 91315305779. The reversal of 91315305776 is 67750351319.

It is a self number, because there is not a number n which added to its sum of digits gives 91315305776.

It is not an unprimeable number, because it can be changed into a prime (91315305779) 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 as a sum of consecutive naturals, namely, 2853603290 + ... + 2853603321.

Almost surely, 2^91315305776 is an apocalyptic number.

It is an amenable number.

91315305776 is a deficient number, since it is larger than the sum of its proper divisors (85608099196).

91315305776 is a wasteful number, since it uses less digits than its factorization.

91315305776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5707206619 (or 5707206613 counting only the distinct ones).

The product of its (nonzero) digits is 595350, while the sum is 47.

The spelling of 91315305776 in words is "ninety-one billion, three hundred fifteen million, three hundred five thousand, seven hundred seventy-six".