90653868690 has 128 divisors (see below), whose sum is σ = 271344826368. Its totient is φ = 18830945280.

The previous prime is 90653868689. The next prime is 90653868707. The reversal of 90653868690 is 9686835609.

It is a super-2 number, since 2×90653868690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11123197 + ... + 11131343.

It is an arithmetic number, because the mean of its divisors is an integer number (2119881456).

Almost surely, 2^90653868690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90653868690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135672413184).

90653868690 is an abundant number, since it is smaller than the sum of its proper divisors (180690957678).

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

90653868690 is a wasteful number, since it uses less digits than its factorization.

90653868690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12992.

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 90653868690 in words is "ninety billion, six hundred fifty-three million, eight hundred sixty-eight thousand, six hundred ninety".