15214665478828 has 12 divisors (see below), whose sum is σ = 28191880152072. Its totient is φ = 7159842578240.

The previous prime is 15214665478819. The next prime is 15214665478849. The reversal of 15214665478828 is 82887456641251.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111872540218 + ... + 111872540353.

It is an arithmetic number, because the mean of its divisors is an integer number (2349323346006).

Almost surely, 2^{15214665478828} is an apocalyptic number.

It is an amenable number.

15214665478828 is a deficient number, since it is larger than the sum of its proper divisors (12977214673244).

15214665478828 is a wasteful number, since it uses less digits than its factorization.

15214665478828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223745080592 (or 223745080590 counting only the distinct ones).

The product of its digits is 206438400, while the sum is 67.

The spelling of 15214665478828 in words is "fifteen trillion, two hundred fourteen billion, six hundred sixty-five million, four hundred seventy-eight thousand, eight hundred twenty-eight".