90075083139256 has 16 divisors (see below), whose sum is σ = 172077399394200. Its totient is φ = 44187776634144.

The previous prime is 90075083139143. The next prime is 90075083139257. The reversal of 90075083139256 is 65293138057009.

It is a super-2 number, since 2×90075083139256² (a number of 29 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 90075083139256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90075083139257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106220616486 + ... + 106220617333.

Almost surely, 2^{90075083139256} is an apocalyptic number.

It is an amenable number.

90075083139256 is a deficient number, since it is larger than the sum of its proper divisors (82002316254944).

90075083139256 is a wasteful number, since it uses less digits than its factorization.

90075083139256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212441233878 (or 212441233874 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 90075083139256 in words is "ninety trillion, seventy-five billion, eighty-three million, one hundred thirty-nine thousand, two hundred fifty-six".