1277672341523 has 2 divisors, whose sum is σ = 1277672341524. Its totient is φ = 1277672341522.

The previous prime is 1277672341499. The next prime is 1277672341529. The reversal of 1277672341523 is 3251432767721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1277672341523 - 2¹² = 1277672337427 is a prime.

It is a super-2 number, since 2×1277672341523² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1277672341529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638836170761 + 638836170762.

It is an arithmetic number, because the mean of its divisors is an integer number (638836170762).

Almost surely, 2^{1277672341523} is an apocalyptic number.

1277672341523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1277672341523 is an equidigital number, since it uses as much as digits as its factorization.

1277672341523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 50.

The spelling of 1277672341523 in words is "one trillion, two hundred seventy-seven billion, six hundred seventy-two million, three hundred forty-one thousand, five hundred twenty-three".