1277135470601 has 2 divisors, whose sum is σ = 1277135470602. Its totient is φ = 1277135470600.

The previous prime is 1277135470579. The next prime is 1277135470609. The reversal of 1277135470601 is 1060745317721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1158096670201 + 119038800400 = 1076149^2 + 345020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1277135470601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1277135470609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638567735300 + 638567735301.

It is an arithmetic number, because the mean of its divisors is an integer number (638567735301).

Almost surely, 2^{1277135470601} is an apocalyptic number.

It is an amenable number.

1277135470601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1277135470601 is an equidigital number, since it uses as much as digits as its factorization.

1277135470601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 44.

The spelling of 1277135470601 in words is "one trillion, two hundred seventy-seven billion, one hundred thirty-five million, four hundred seventy thousand, six hundred one".