90830155812 has 48 divisors (see below), whose sum is σ = 237452803392. Its totient is φ = 26780388480.

The previous prime is 90830155781. The next prime is 90830155847. The reversal of 90830155812 is 21855103809.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9293863 + ... + 9303630.

It is an arithmetic number, because the mean of its divisors is an integer number (4946933404).

Almost surely, 2^90830155812 is an apocalyptic number.

It is an amenable number.

90830155812 is an abundant number, since it is smaller than the sum of its proper divisors (146622647580).

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

90830155812 is a wasteful number, since it uses less digits than its factorization.

90830155812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18597548 (or 18597546 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 42.

It can be divided in two parts, 90830 and 155812, that added together give a palindrome (246642).

The spelling of 90830155812 in words is "ninety billion, eight hundred thirty million, one hundred fifty-five thousand, eight hundred twelve".