9013901555520 has 896 divisors, whose sum is σ = 34063152721920. Its totient is φ = 2239726878720.

The previous prime is 9013901555453. The next prime is 9013901555597. The reversal of 9013901555520 is 255551093109.

9013901555520 is a `hidden beast` number, since 9 + 0 + 1 + 3 + 90 + 1 + 5 + 5 + 552 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 961273072 + ... + 961282448.

It is an arithmetic number, because the mean of its divisors is an integer number (38016911520).

Almost surely, 2^{9013901555520} is an apocalyptic number.

9013901555520 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9013901555520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17031576360960).

9013901555520 is an abundant number, since it is smaller than the sum of its proper divisors (25049251166400).

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

9013901555520 is a wasteful number, since it uses less digits than its factorization.

9013901555520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9568 (or 9552 counting only the distinct ones).

The product of its (nonzero) digits is 303750, while the sum is 45.

The spelling of 9013901555520 in words is "nine trillion, thirteen billion, nine hundred one million, five hundred fifty-five thousand, five hundred twenty".