90157240986 has 16 divisors (see below), whose sum is σ = 180659257824. Its totient is φ = 29994951024.

The previous prime is 90157240981. The next prime is 90157241017. The reversal of 90157240986 is 68904275109.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90157240981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14362261 + ... + 14368536.

It is an arithmetic number, because the mean of its divisors is an integer number (11291203614).

Almost surely, 2^90157240986 is an apocalyptic number.

90157240986 is an abundant number, since it is smaller than the sum of its proper divisors (90502016838).

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

90157240986 is a wasteful number, since it uses less digits than its factorization.

90157240986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28731325.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 90157240986 in words is "ninety billion, one hundred fifty-seven million, two hundred forty thousand, nine hundred eighty-six".