91606545748 has 48 divisors (see below), whose sum is σ = 163031400000. Its totient is φ = 45033988608.

The previous prime is 91606545707. The next prime is 91606545781. The reversal of 91606545748 is 84754560619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40371958 + ... + 40374226.

It is an arithmetic number, because the mean of its divisors is an integer number (3396487500).

Almost surely, 2^91606545748 is an apocalyptic number.

It is an amenable number.

91606545748 is a deficient number, since it is larger than the sum of its proper divisors (71424854252).

91606545748 is a wasteful number, since it uses less digits than its factorization.

91606545748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064 (or 3062 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 91606545748 in words is "ninety-one billion, six hundred six million, five hundred forty-five thousand, seven hundred forty-eight".