15220173700272 has 40 divisors (see below), whose sum is σ = 39518369809776. Its totient is φ = 5047637975296.

The previous prime is 15220173700231. The next prime is 15220173700273. The reversal of 15220173700272 is 27200737102251.

It is a self number, because there is not a number n which added to its sum of digits gives 15220173700272.

It is not an unprimeable number, because it can be changed into a prime (15220173700273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804779763 + ... + 804798674.

Almost surely, 2^{15220173700272} is an apocalyptic number.

15220173700272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15220173700272 is an abundant number, since it is smaller than the sum of its proper divisors (24298196109504).

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

15220173700272 is a wasteful number, since it uses less digits than its factorization.

15220173700272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609578645 (or 1609578639 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 39.

The spelling of 15220173700272 in words is "fifteen trillion, two hundred twenty billion, one hundred seventy-three million, seven hundred thousand, two hundred seventy-two".