1377647652049 has 2 divisors, whose sum is σ = 1377647652050. Its totient is φ = 1377647652048.

The previous prime is 1377647651971. The next prime is 1377647652053. The reversal of 1377647652049 is 9402567467731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 893085481024 + 484562171025 = 945032^2 + 696105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1377647652049 is a prime.

It is a super-2 number, since 2×1377647652049² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1377647652149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688823826024 + 688823826025.

It is an arithmetic number, because the mean of its divisors is an integer number (688823826025).

Almost surely, 2^{1377647652049} is an apocalyptic number.

It is an amenable number.

1377647652049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377647652049 is an equidigital number, since it uses as much as digits as its factorization.

1377647652049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53343360, while the sum is 61.

The spelling of 1377647652049 in words is "one trillion, three hundred seventy-seven billion, six hundred forty-seven million, six hundred fifty-two thousand, forty-nine".