91265684481 has 48 divisors (see below), whose sum is σ = 134387285760. Its totient is φ = 59675616000.

The previous prime is 91265684449. The next prime is 91265684507. The reversal of 91265684481 is 18448656219.

91265684481 is a `hidden beast` number, since 91 + 26 + 56 + 8 + 4 + 481 = 666.

It is not a de Polignac number, because 91265684481 - 2⁵ = 91265684449 is a prime.

It is a super-2 number, since 2×91265684481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91265684381) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100181416 + ... + 100182326.

It is an arithmetic number, because the mean of its divisors is an integer number (2799735120).

Almost surely, 2^91265684481 is an apocalyptic number.

It is an amenable number.

91265684481 is a deficient number, since it is larger than the sum of its proper divisors (43121601279).

91265684481 is a wasteful number, since it uses less digits than its factorization.

91265684481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878 (or 1875 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 91265684481 in words is "ninety-one billion, two hundred sixty-five million, six hundred eighty-four thousand, four hundred eighty-one".