1277161044623 has 2 divisors, whose sum is σ = 1277161044624. Its totient is φ = 1277161044622.

The previous prime is 1277161044619. The next prime is 1277161044739. The reversal of 1277161044623 is 3264401617721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1277161044623 - 2² = 1277161044619 is a prime.

It is a super-2 number, since 2×1277161044623² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1271161044623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638580522311 + 638580522312.

It is an arithmetic number, because the mean of its divisors is an integer number (638580522312).

Almost surely, 2^{1277161044623} is an apocalyptic number.

1277161044623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1277161044623 is an equidigital number, since it uses as much as digits as its factorization.

1277161044623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 1277161044623 in words is "one trillion, two hundred seventy-seven billion, one hundred sixty-one million, forty-four thousand, six hundred twenty-three".