15214245779 has 4 divisors (see below), whose sum is σ = 15537953184. Its totient is φ = 14890538376.

The previous prime is 15214245719. The next prime is 15214245857. The reversal of 15214245779 is 97754241251.

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 15214245779 - 2²⁸ = 14945810323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 323707357 = 15214245779 / (1 + 5 + 2 + 1 + 4 + 2 + 4 + 5 + 7 + 7 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15214245719) 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, 161853632 + ... + 161853725.

It is an arithmetic number, because the mean of its divisors is an integer number (3884488296).

Almost surely, 2^15214245779 is an apocalyptic number.

15214245779 is a deficient number, since it is larger than the sum of its proper divisors (323707405).

15214245779 is an equidigital number, since it uses as much as digits as its factorization.

15214245779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323707404.

The product of its digits is 705600, while the sum is 47.

The spelling of 15214245779 in words is "fifteen billion, two hundred fourteen million, two hundred forty-five thousand, seven hundred seventy-nine".