15036621220 has 48 divisors (see below), whose sum is σ = 34086044160. Its totient is φ = 5554752896.

The previous prime is 15036621203. The next prime is 15036621239. The reversal of 15036621220 is 2212663051.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550252 + ... + 576931.

It is an arithmetic number, because the mean of its divisors is an integer number (710125920).

Almost surely, 2^15036621220 is an apocalyptic number.

15036621220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15036621220 is an abundant number, since it is smaller than the sum of its proper divisors (19049422940).

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

15036621220 is a wasteful number, since it uses less digits than its factorization.

15036621220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127244 (or 1127242 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 15036621220 in words is "fifteen billion, thirty-six million, six hundred twenty-one thousand, two hundred twenty".