12557187047939 has 2 divisors, whose sum is σ = 12557187047940. Its totient is φ = 12557187047938.

The previous prime is 12557187047929. The next prime is 12557187047953. The reversal of 12557187047939 is 93974078175521.

It is a weak prime.

It is an emirp because it is prime and its reverse (93974078175521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12557187047939 - 2³² = 12552892080643 is a prime.

It is not a weakly prime, because it can be changed into another prime (12557187047929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6278593523969 + 6278593523970.

It is an arithmetic number, because the mean of its divisors is an integer number (6278593523970).

Almost surely, 2^{12557187047939} is an apocalyptic number.

12557187047939 is a deficient number, since it is larger than the sum of its proper divisors (1).

12557187047939 is an equidigital number, since it uses as much as digits as its factorization.

12557187047939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 133358400, while the sum is 68.

The spelling of 12557187047939 in words is "twelve trillion, five hundred fifty-seven billion, one hundred eighty-seven million, forty-seven thousand, nine hundred thirty-nine".