91229116404 has 48 divisors (see below), whose sum is σ = 225604564416. Its totient is φ = 28593600000.

The previous prime is 91229116403. The next prime is 91229116463. The reversal of 91229116404 is 40461192219.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91229116403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1654 + ... + 427154.

It is an arithmetic number, because the mean of its divisors is an integer number (4700095092).

Almost surely, 2^91229116404 is an apocalyptic number.

It is an amenable number.

91229116404 is an abundant number, since it is smaller than the sum of its proper divisors (134375448012).

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

91229116404 is a wasteful number, since it uses less digits than its factorization.

91229116404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426576 (or 426574 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 91229116404 in words is "ninety-one billion, two hundred twenty-nine million, one hundred sixteen thousand, four hundred four".