91602478788 has 12 divisors (see below), whose sum is σ = 213739117200. Its totient is φ = 30534159592.

The previous prime is 91602478733. The next prime is 91602478969. The reversal of 91602478788 is 88787420619.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3816769938 + ... + 3816769961.

It is an arithmetic number, because the mean of its divisors is an integer number (17811593100).

Almost surely, 2^91602478788 is an apocalyptic number.

It is an amenable number.

91602478788 is an abundant number, since it is smaller than the sum of its proper divisors (122136638412).

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

91602478788 is a wasteful number, since it uses less digits than its factorization.

91602478788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7633539906 (or 7633539904 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 91602478788 in words is "ninety-one billion, six hundred two million, four hundred seventy-eight thousand, seven hundred eighty-eight".