15220727350820 has 12 divisors (see below), whose sum is σ = 31963527436764. Its totient is φ = 6088290940320.

The previous prime is 15220727350789. The next prime is 15220727350823. The reversal of 15220727350820 is 2805372702251.

It can be written as a sum of positive squares in 2 ways, for example, as 11701831590436 + 3518895760384 = 3420794^2 + 1875872^2 .

It is not an unprimeable number, because it can be changed into a prime (15220727350823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380518183751 + ... + 380518183790.

It is an arithmetic number, because the mean of its divisors is an integer number (2663627286397).

Almost surely, 2^{15220727350820} is an apocalyptic number.

15220727350820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15220727350820 is an abundant number, since it is smaller than the sum of its proper divisors (16742800085944).

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

15220727350820 is a wasteful number, since it uses less digits than its factorization.

15220727350820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761036367550 (or 761036367548 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 15220727350820 in words is "fifteen trillion, two hundred twenty billion, seven hundred twenty-seven million, three hundred fifty thousand, eight hundred twenty".