9090555963720 has 768 divisors, whose sum is σ = 38013703833600. Its totient is φ = 1711717539840.

The previous prime is 9090555963703. The next prime is 9090555963733. The reversal of 9090555963720 is 273695550909.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 28104352 + ... + 28425968.

It is an arithmetic number, because the mean of its divisors is an integer number (49497010200).

Almost surely, 2^{9090555963720} 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 9090555963720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19006851916800).

9090555963720 is an abundant number, since it is smaller than the sum of its proper divisors (28923147869880).

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

9090555963720 is a wasteful number, since it uses less digits than its factorization.

9090555963720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321698 (or 321687 counting only the distinct ones).

The product of its (nonzero) digits is 22963500, while the sum is 60.

The spelling of 9090555963720 in words is "nine trillion, ninety billion, five hundred fifty-five million, nine hundred sixty-three thousand, seven hundred twenty".