12878842979519 has 32 divisors (see below), whose sum is σ = 14299130672640. Its totient is φ = 11598306044160.

The previous prime is 12878842979441. The next prime is 12878842979521. The reversal of 12878842979519 is 91597924887821.

It is a de Polignac number, because none of the positive numbers 2^k-12878842979519 is a prime.

It is a super-2 number, since 2×12878842979519² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12878842972519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62556719 + ... + 62762255.

It is an arithmetic number, because the mean of its divisors is an integer number (446847833520).

Almost surely, 2^{12878842979519} is an apocalyptic number.

12878842979519 is a deficient number, since it is larger than the sum of its proper divisors (1420287693121).

12878842979519 is a wasteful number, since it uses less digits than its factorization.

12878842979519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206012 (or 205990 counting only the distinct ones).

The product of its digits is 1463132160, while the sum is 80.

The spelling of 12878842979519 in words is "twelve trillion, eight hundred seventy-eight billion, eight hundred forty-two million, nine hundred seventy-nine thousand, five hundred nineteen".