90562769920 has 176 divisors, whose sum is σ = 262885893120. Its totient is φ = 29223419904.

The previous prime is 90562769881. The next prime is 90562769923. The reversal of 90562769920 is 2996726509.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90562769923) 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, 534961 + ... + 683599.

Almost surely, 2^90562769920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90562769920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131442946560).

90562769920 is an abundant number, since it is smaller than the sum of its proper divisors (172323123200).

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

90562769920 is a wasteful number, since it uses less digits than its factorization.

90562769920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148688 (or 148670 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 90562769920 in words is "ninety billion, five hundred sixty-two million, seven hundred sixty-nine thousand, nine hundred twenty".