90073613508 has 24 divisors (see below), whose sum is σ = 210176842848. Its totient is φ = 30023812416.

The previous prime is 90073613507. The next prime is 90073613549. The reversal of 90073613508 is 80531637009.

It is a super-2 number, since 2×90073613508² (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 90073613508.

It is not an unprimeable number, because it can be changed into a prime (90073613503) 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, 708235 + ... + 825677.

It is an arithmetic number, because the mean of its divisors is an integer number (8757368452).

Almost surely, 2^90073613508 is an apocalyptic number.

It is an amenable number.

90073613508 is an abundant number, since it is smaller than the sum of its proper divisors (120103229340).

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

90073613508 is a wasteful number, since it uses less digits than its factorization.

90073613508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181363 (or 181361 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 90073613508 in words is "ninety billion, seventy-three million, six hundred thirteen thousand, five hundred eight".