12715660072478 has 32 divisors (see below), whose sum is σ = 21621466460160. Its totient is φ = 5555515563360.

The previous prime is 12715660072397. The next prime is 12715660072517. The reversal of 12715660072478 is 87427006651721.

It is a super-2 number, since 2×12715660072478² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44544950 + ... + 44829497.

It is an arithmetic number, because the mean of its divisors is an integer number (675670826880).

Almost surely, 2^{12715660072478} is an apocalyptic number.

12715660072478 is a deficient number, since it is larger than the sum of its proper divisors (8905806387682).

12715660072478 is a wasteful number, since it uses less digits than its factorization.

12715660072478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89374712.

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 12715660072478 in words is "twelve trillion, seven hundred fifteen billion, six hundred sixty million, seventy-two thousand, four hundred seventy-eight".