91604047360 has 80 divisors (see below), whose sum is σ = 251011496736. Its totient is φ = 31407095808.

The previous prime is 91604047319. The next prime is 91604047429. The reversal of 91604047360 is 6374040619.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2537997 + ... + 2573836.

Almost surely, 2^91604047360 is an apocalyptic number.

It is an amenable number.

91604047360 is an abundant number, since it is smaller than the sum of its proper divisors (159407449376).

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

91604047360 is an equidigital number, since it uses as much as digits as its factorization.

91604047360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111863 (or 5111847 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

Adding to 91604047360 its reverse (6374040619), we get a palindrome (97978087979).

The spelling of 91604047360 in words is "ninety-one billion, six hundred four million, forty-seven thousand, three hundred sixty".