15220445199 has 4 divisors (see below), whose sum is σ = 20293926936. Its totient is φ = 10146963464.

The previous prime is 15220445179. The next prime is 15220445209. The reversal of 15220445199 is 99154402251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15220445199 - 2¹¹ = 15220443151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15220445199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15220445179) 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, 2536740864 + ... + 2536740869.

It is an arithmetic number, because the mean of its divisors is an integer number (5073481734).

Almost surely, 2^15220445199 is an apocalyptic number.

15220445199 is a deficient number, since it is larger than the sum of its proper divisors (5073481737).

15220445199 is an equidigital number, since it uses as much as digits as its factorization.

15220445199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5073481736.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 15220445199 in words is "fifteen billion, two hundred twenty million, four hundred forty-five thousand, one hundred ninety-nine".