90856936730 has 32 divisors (see below), whose sum is σ = 197900153856. Its totient is φ = 29318540544.

The previous prime is 90856936717. The next prime is 90856936739. The reversal of 90856936730 is 3763965809.

It is not an unprimeable number, because it can be changed into a prime (90856936739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38173994 + ... + 38176373.

It is an arithmetic number, because the mean of its divisors is an integer number (6184379808).

Almost surely, 2^90856936730 is an apocalyptic number.

90856936730 is an abundant number, since it is smaller than the sum of its proper divisors (107043217126).

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

90856936730 is a wasteful number, since it uses less digits than its factorization.

90856936730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76350398.

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 90856936730 in words is "ninety billion, eight hundred fifty-six million, nine hundred thirty-six thousand, seven hundred thirty".