90633969522 has 64 divisors (see below), whose sum is σ = 204945189120. Its totient is φ = 29683785600.

The previous prime is 90633969449. The next prime is 90633969527. The reversal of 90633969522 is 22596933609.

90633969522 is a `hidden beast` number, since 90 + 63 + 396 + 95 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (90633969527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1083022 + ... + 1163702.

It is an arithmetic number, because the mean of its divisors is an integer number (3202268580).

Almost surely, 2^90633969522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90633969522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102472594560).

90633969522 is an abundant number, since it is smaller than the sum of its proper divisors (114311219598).

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

90633969522 is a wasteful number, since it uses less digits than its factorization.

90633969522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81056 (or 81050 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 54.

The spelling of 90633969522 in words is "ninety billion, six hundred thirty-three million, nine hundred sixty-nine thousand, five hundred twenty-two".