91066475496 has 32 divisors (see below), whose sum is σ = 227756008800. Its totient is φ = 30343515840.

The previous prime is 91066475491. The next prime is 91066475503. The reversal of 91066475496 is 69457466019.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (91066475491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686295 + ... + 808166.

It is an arithmetic number, because the mean of its divisors is an integer number (7117375275).

Almost surely, 2^91066475496 is an apocalyptic number.

It is an amenable number.

91066475496 is an abundant number, since it is smaller than the sum of its proper divisors (136689533304).

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

91066475496 is a wasteful number, since it uses less digits than its factorization.

91066475496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497009 (or 1497005 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 91066475496 in words is "ninety-one billion, sixty-six million, four hundred seventy-five thousand, four hundred ninety-six".