90386357812 has 48 divisors (see below), whose sum is σ = 170141368320. Its totient is φ = 41912886752.

The previous prime is 90386357779. The next prime is 90386357819. The reversal of 90386357812 is 21875368309.

It is a self number, because there is not a number n which added to its sum of digits gives 90386357812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90386357819) 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, 364989 + ... + 560347.

It is an arithmetic number, because the mean of its divisors is an integer number (3544611840).

Almost surely, 2^90386357812 is an apocalyptic number.

90386357812 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

90386357812 is a deficient number, since it is larger than the sum of its proper divisors (79755010508).

90386357812 is a wasteful number, since it uses less digits than its factorization.

90386357812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195540 (or 195538 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 90386357812 in words is "ninety billion, three hundred eighty-six million, three hundred fifty-seven thousand, eight hundred twelve".