91673712930 has 32 divisors (see below), whose sum is σ = 220527422208. Its totient is φ = 24389600000.

The previous prime is 91673712917. The next prime is 91673712973. The reversal of 91673712930 is 3921737619.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91673712930.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3532071 + ... + 3557930.

It is an arithmetic number, because the mean of its divisors is an integer number (6891481944).

Almost surely, 2^91673712930 is an apocalyptic number.

91673712930 is an abundant number, since it is smaller than the sum of its proper divisors (128853709278).

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

91673712930 is a wasteful number, since it uses less digits than its factorization.

91673712930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7090442.

The product of its (nonzero) digits is 428652, while the sum is 48.

The spelling of 91673712930 in words is "ninety-one billion, six hundred seventy-three million, seven hundred twelve thousand, nine hundred thirty".