90909097028 has 12 divisors (see below), whose sum is σ = 166007916480. Its totient is φ = 43478263752.

The previous prime is 90909096991. The next prime is 90909097033. The reversal of 90909097028 is 82079090909.

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 3 ways as a sum of consecutive naturals, for example, 494071088 + ... + 494071271.

It is an arithmetic number, because the mean of its divisors is an integer number (13833993040).

Almost surely, 2^90909097028 is an apocalyptic number.

It is an amenable number.

90909097028 is a deficient number, since it is larger than the sum of its proper divisors (75098819452).

90909097028 is a wasteful number, since it uses less digits than its factorization.

90909097028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988142386 (or 988142384 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 53.

The spelling of 90909097028 in words is "ninety billion, nine hundred nine million, ninety-seven thousand, twenty-eight".