1277055944761 has 9 divisors (see below), whose sum is σ = 1282126208493. Its totient is φ = 1272005666400.

The previous prime is 1277055944693. The next prime is 1277055944771. The reversal of 1277055944761 is 1674495507721.

The square root of 1277055944761 is 1130069.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 983530376361 + 293525568400 = 991731^2 + 541780^2 .

It is not a de Polignac number, because 1277055944761 - 2²⁷ = 1276921727033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1277055944696 and 1277055944705.

It is not an unprimeable number, because it can be changed into a prime (1277055944771) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 303986461 + ... + 303990661.

Almost surely, 2^{1277055944761} is an apocalyptic number.

1277055944761 is the 1130069-th square number.

1277055944761 is the 565035-th centered octagonal number.

It is an amenable number.

1277055944761 is a deficient number, since it is larger than the sum of its proper divisors (5070263732).

1277055944761 is an frugal number, since it uses more digits than its factorization.

1277055944761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8940 (or 4470 counting only the distinct ones).

The product of its (nonzero) digits is 14817600, while the sum is 58.

The spelling of 1277055944761 in words is "one trillion, two hundred seventy-seven billion, fifty-five million, nine hundred forty-four thousand, seven hundred sixty-one".