12757983947 has 2 divisors, whose sum is σ = 12757983948. Its totient is φ = 12757983946.

The previous prime is 12757983913. The next prime is 12757983989. The reversal of 12757983947 is 74938975721.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12757983947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12757983947.

It is not a weakly prime, because it can be changed into another prime (12757913947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6378991973 + 6378991974.

It is an arithmetic number, because the mean of its divisors is an integer number (6378991974).

Almost surely, 2^12757983947 is an apocalyptic number.

12757983947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12757983947 is an equidigital number, since it uses as much as digits as its factorization.

12757983947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26671680, while the sum is 62.

The spelling of 12757983947 in words is "twelve billion, seven hundred fifty-seven million, nine hundred eighty-three thousand, nine hundred forty-seven".