90643732204080 has 640 divisors, whose sum is σ = 323932610985984. Its totient is φ = 20753203609600.

The previous prime is 90643732204079. The next prime is 90643732204097. The reversal of 90643732204080 is 8040223734609.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1804512565 + ... + 1804562795.

Almost surely, 2^{90643732204080} 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 90643732204080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161966305492992).

90643732204080 is an abundant number, since it is smaller than the sum of its proper divisors (233288878781904).

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

90643732204080 is a wasteful number, since it uses less digits than its factorization.

90643732204080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50657 (or 50651 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

Adding to 90643732204080 its reverse (8040223734609), we get a palindrome (98683955938689).

The spelling of 90643732204080 in words is "ninety trillion, six hundred forty-three billion, seven hundred thirty-two million, two hundred four thousand, eighty".