91930475004 has 24 divisors (see below), whose sum is σ = 214724023248. Its totient is φ = 30612122880.

The previous prime is 91930475003. The next prime is 91930475011. The reversal of 91930475004 is 40057403919.

It is a super-2 number, since 2×91930475004² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91930475003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3908887 + ... + 3932334.

It is an arithmetic number, because the mean of its divisors is an integer number (8946834302).

Almost surely, 2^91930475004 is an apocalyptic number.

It is an amenable number.

91930475004 is an abundant number, since it is smaller than the sum of its proper divisors (122793548244).

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

91930475004 is a wasteful number, since it uses less digits than its factorization.

91930475004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7842205 (or 7842203 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 91930475004 in words is "ninety-one billion, nine hundred thirty million, four hundred seventy-five thousand, four".