90213099288 has 64 divisors (see below), whose sum is σ = 242936064000. Its totient is φ = 27751632000.

The previous prime is 90213099259. The next prime is 90213099331. The reversal of 90213099288 is 88299031209.

It is a super-2 number, since 2×90213099288² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90213099288.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1467163 + ... + 1527413.

It is an arithmetic number, because the mean of its divisors is an integer number (3795876000).

Almost surely, 2^90213099288 is an apocalyptic number.

It is an amenable number.

90213099288 is an abundant number, since it is smaller than the sum of its proper divisors (152722964712).

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

90213099288 is a wasteful number, since it uses less digits than its factorization.

90213099288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65072 (or 65068 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 90213099288 in words is "ninety billion, two hundred thirteen million, ninety-nine thousand, two hundred eighty-eight".