12978567512059 has 4 divisors (see below), whose sum is σ = 13223446144416. Its totient is φ = 12733688879704.

The previous prime is 12978567511981. The next prime is 12978567512093. The reversal of 12978567512059 is 95021576587921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12978567512059 - 2¹⁵ = 12978567479291 is a prime.

It is a super-2 number, since 2×12978567512059² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12978567511985 and 12978567512003.

It is not an unprimeable number, because it can be changed into a prime (12978567912059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122439316099 + ... + 122439316204.

It is an arithmetic number, because the mean of its divisors is an integer number (3305861536104).

Almost surely, 2^{12978567512059} is an apocalyptic number.

12978567512059 is a deficient number, since it is larger than the sum of its proper divisors (244878632357).

12978567512059 is an equidigital number, since it uses as much as digits as its factorization.

12978567512059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244878632356.

The product of its (nonzero) digits is 95256000, while the sum is 67.

The spelling of 12978567512059 in words is "twelve trillion, nine hundred seventy-eight billion, five hundred sixty-seven million, five hundred twelve thousand, fifty-nine".