126677475377 has 2 divisors, whose sum is σ = 126677475378. Its totient is φ = 126677475376.

The previous prime is 126677475371. The next prime is 126677475437. The reversal of 126677475377 is 773574776621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91572206881 + 35105268496 = 302609^2 + 187364^2 .

It is a cyclic number.

It is not a de Polignac number, because 126677475377 - 2²⁰ = 126676426801 is a prime.

It is not a weakly prime, because it can be changed into another prime (126677475371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63338737688 + 63338737689.

It is an arithmetic number, because the mean of its divisors is an integer number (63338737689).

Almost surely, 2^126677475377 is an apocalyptic number.

It is an amenable number.

126677475377 is a deficient number, since it is larger than the sum of its proper divisors (1).

126677475377 is an equidigital number, since it uses as much as digits as its factorization.

126677475377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72606240, while the sum is 62.

The spelling of 126677475377 in words is "one hundred twenty-six billion, six hundred seventy-seven million, four hundred seventy-five thousand, three hundred seventy-seven".