90919101912 has 32 divisors (see below), whose sum is σ = 227383396800. Its totient is φ = 30294948384.

The previous prime is 90919101857. The next prime is 90919101943. The reversal of 90919101912 is 21910191909.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648538 + ... + 776169.

It is an arithmetic number, because the mean of its divisors is an integer number (7105731150).

Almost surely, 2^90919101912 is an apocalyptic number.

It is an amenable number.

90919101912 is an abundant number, since it is smaller than the sum of its proper divisors (136464294888).

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

90919101912 is a wasteful number, since it uses less digits than its factorization.

90919101912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427375 (or 1427371 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 42.

The spelling of 90919101912 in words is "ninety billion, nine hundred nineteen million, one hundred one thousand, nine hundred twelve".