12777602639 has 2 divisors, whose sum is σ = 12777602640. Its totient is φ = 12777602638.

The previous prime is 12777602603. The next prime is 12777602647. The reversal of 12777602639 is 93620677721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12777602639 - 2¹² = 12777598543 is a prime.

It is a super-4 number, since 4×12777602639⁴ (a number of 42 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12777602699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6388801319 + 6388801320.

It is an arithmetic number, because the mean of its divisors is an integer number (6388801320).

Almost surely, 2^12777602639 is an apocalyptic number.

12777602639 is a deficient number, since it is larger than the sum of its proper divisors (1).

12777602639 is an equidigital number, since it uses as much as digits as its factorization.

12777602639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The spelling of 12777602639 in words is "twelve billion, seven hundred seventy-seven million, six hundred two thousand, six hundred thirty-nine".