90120601588 has 12 divisors (see below), whose sum is σ = 157715377120. Its totient is φ = 45059065272.

The previous prime is 90120601559. The next prime is 90120601601. The reversal of 90120601588 is 88510602109.

It is a self number, because there is not a number n which added to its sum of digits gives 90120601588.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133728 + ... + 445111.

Almost surely, 2^90120601588 is an apocalyptic number.

It is an amenable number.

90120601588 is a deficient number, since it is larger than the sum of its proper divisors (67594775532).

90120601588 is a wasteful number, since it uses less digits than its factorization.

90120601588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617766 (or 617764 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The spelling of 90120601588 in words is "ninety billion, one hundred twenty million, six hundred one thousand, five hundred eighty-eight".