90919200920 has 32 divisors (see below), whose sum is σ = 205266413520. Its totient is φ = 36243553920.

The previous prime is 90919200877. The next prime is 90919200923. The reversal of 90919200920 is 2900291909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90919200923) 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 7 ways as a sum of consecutive naturals, for example, 3867086 + ... + 3890525.

Almost surely, 2^90919200920 is an apocalyptic number.

It is an amenable number.

90919200920 is an abundant number, since it is smaller than the sum of its proper divisors (114347212600).

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

90919200920 is a wasteful number, since it uses less digits than its factorization.

90919200920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7757915 (or 7757911 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 41.

The spelling of 90919200920 in words is "ninety billion, nine hundred nineteen million, two hundred thousand, nine hundred twenty".