90357983451855 has 24 divisors (see below), whose sum is σ = 178994862457632. Its totient is φ = 41306506720704.

The previous prime is 90357983451833. The next prime is 90357983451859. The reversal of 90357983451855 is 55815438975309.

90357983451855 is a `hidden beast` number, since 9 + 0 + 3 + 5 + 7 + 98 + 3 + 451 + 85 + 5 = 666.

It is not a de Polignac number, because 90357983451855 - 2⁹ = 90357983451343 is a prime.

It is a super-2 number, since 2×90357983451855² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90357983451859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143425370244 + ... + 143425370873.

It is an arithmetic number, because the mean of its divisors is an integer number (7458119269068).

Almost surely, 2^{90357983451855} is an apocalyptic number.

90357983451855 is a deficient number, since it is larger than the sum of its proper divisors (88636879005777).

90357983451855 is a wasteful number, since it uses less digits than its factorization.

90357983451855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286850741135 (or 286850741132 counting only the distinct ones).

The product of its (nonzero) digits is 816480000, while the sum is 72.

The spelling of 90357983451855 in words is "ninety trillion, three hundred fifty-seven billion, nine hundred eighty-three million, four hundred fifty-one thousand, eight hundred fifty-five".