90888315651 has 40 divisors (see below), whose sum is σ = 155727793760. Its totient is φ = 51748595712.

The previous prime is 90888315649. The next prime is 90888315689. The reversal of 90888315651 is 15651388809.

It is not a de Polignac number, because 90888315651 - 2¹ = 90888315649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90888315251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 132286 + ... + 446403.

It is an arithmetic number, because the mean of its divisors is an integer number (3893194844).

Almost surely, 2^90888315651 is an apocalyptic number.

90888315651 is a deficient number, since it is larger than the sum of its proper divisors (64839478109).

90888315651 is a wasteful number, since it uses less digits than its factorization.

90888315651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578985 (or 578976 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The spelling of 90888315651 in words is "ninety billion, eight hundred eighty-eight million, three hundred fifteen thousand, six hundred fifty-one".