15478311279 has 8 divisors (see below), whose sum is σ = 20638355760. Its totient is φ = 10318570496.

The previous prime is 15478311239. The next prime is 15478311287. The reversal of 15478311279 is 97211387451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15478311279 - 2⁷ = 15478311151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15478311209) 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, 103729 + ... + 204245.

It is an arithmetic number, because the mean of its divisors is an integer number (2579794470).

Almost surely, 2^15478311279 is an apocalyptic number.

15478311279 is a deficient number, since it is larger than the sum of its proper divisors (5160044481).

15478311279 is a wasteful number, since it uses less digits than its factorization.

15478311279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151849.

The product of its digits is 423360, while the sum is 48.

The spelling of 15478311279 in words is "fifteen billion, four hundred seventy-eight million, three hundred eleven thousand, two hundred seventy-nine".