15113561921220 has 96 divisors (see below), whose sum is σ = 49392406683648. Its totient is φ = 3381027829632.

The previous prime is 15113561921219. The next prime is 15113561921231. The reversal of 15113561921220 is 2212916531151.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382795912 + ... + 382835391.

It is an arithmetic number, because the mean of its divisors is an integer number (514504236288).

Almost surely, 2^{15113561921220} is an apocalyptic number.

15113561921220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15113561921220 is an abundant number, since it is smaller than the sum of its proper divisors (34278844762428).

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

15113561921220 is a wasteful number, since it uses less digits than its factorization.

15113561921220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765631369 (or 765631367 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 15113561921220 in words is "fifteen trillion, one hundred thirteen billion, five hundred sixty-one million, nine hundred twenty-one thousand, two hundred twenty".