15479580217394 has 16 divisors (see below), whose sum is σ = 24069360772800. Its totient is φ = 7457556015504.

The previous prime is 15479580217313. The next prime is 15479580217403. The reversal of 15479580217394 is 49371208597451.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15479580217394.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273985424 + ... + 274041915.

It is an arithmetic number, because the mean of its divisors is an integer number (1504335048300).

Almost surely, 2^{15479580217394} is an apocalyptic number.

15479580217394 is a deficient number, since it is larger than the sum of its proper divisors (8589780555406).

15479580217394 is a wasteful number, since it uses less digits than its factorization.

15479580217394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548027857.

The product of its (nonzero) digits is 76204800, while the sum is 65.

The spelling of 15479580217394 in words is "fifteen trillion, four hundred seventy-nine billion, five hundred eighty million, two hundred seventeen thousand, three hundred ninety-four".