13277871421657 has 2 divisors, whose sum is σ = 13277871421658. Its totient is φ = 13277871421656.

The previous prime is 13277871421627. The next prime is 13277871421663. The reversal of 13277871421657 is 75612417877231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9151707982041 + 4126163439616 = 3025179^2 + 2031296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13277871421657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13277871421595 and 13277871421604.

It is not a weakly prime, because it can be changed into another prime (13277871421627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6638935710828 + 6638935710829.

It is an arithmetic number, because the mean of its divisors is an integer number (6638935710829).

Almost surely, 2^{13277871421657} is an apocalyptic number.

It is an amenable number.

13277871421657 is a deficient number, since it is larger than the sum of its proper divisors (1).

13277871421657 is an equidigital number, since it uses as much as digits as its factorization.

13277871421657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27659520, while the sum is 61.

The spelling of 13277871421657 in words is "thirteen trillion, two hundred seventy-seven billion, eight hundred seventy-one million, four hundred twenty-one thousand, six hundred fifty-seven".