90134812086 has 16 divisors (see below), whose sum is σ = 196657771968. Its totient is φ = 27313579400.

The previous prime is 90134812057. The next prime is 90134812123. The reversal of 90134812086 is 68021843109.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682839420 + ... + 682839551.

It is an arithmetic number, because the mean of its divisors is an integer number (12291110748).

Almost surely, 2^90134812086 is an apocalyptic number.

90134812086 is an abundant number, since it is smaller than the sum of its proper divisors (106522959882).

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

90134812086 is a wasteful number, since it uses less digits than its factorization.

90134812086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365678987.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 90134812086 in words is "ninety billion, one hundred thirty-four million, eight hundred twelve thousand, eighty-six".