91904608810 has 64 divisors (see below), whose sum is σ = 191986827264. Its totient is φ = 31023720000.

The previous prime is 91904608801. The next prime is 91904608813. The reversal of 91904608810 is 1880640919.

It is a super-2 number, since 2×91904608810² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91904608813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3720159 + ... + 3744781.

It is an arithmetic number, because the mean of its divisors is an integer number (2999794176).

Almost surely, 2^91904608810 is an apocalyptic number.

91904608810 is an abundant number, since it is smaller than the sum of its proper divisors (100082218454).

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

91904608810 is a wasteful number, since it uses less digits than its factorization.

91904608810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25459.

The product of its (nonzero) digits is 124416, while the sum is 46.

The spelling of 91904608810 in words is "ninety-one billion, nine hundred four million, six hundred eight thousand, eight hundred ten".