1338761027557 has 2 divisors, whose sum is σ = 1338761027558. Its totient is φ = 1338761027556.

The previous prime is 1338761027447. The next prime is 1338761027563. The reversal of 1338761027557 is 7557201678331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797816958436 + 540944069121 = 893206^2 + 735489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1338761027557 - 2²⁷ = 1338626809829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1338761027498 and 1338761027507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338761027587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669380513778 + 669380513779.

It is an arithmetic number, because the mean of its divisors is an integer number (669380513779).

Almost surely, 2^{1338761027557} is an apocalyptic number.

It is an amenable number.

1338761027557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338761027557 is an equidigital number, since it uses as much as digits as its factorization.

1338761027557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7408800, while the sum is 55.

The spelling of 1338761027557 in words is "one trillion, three hundred thirty-eight billion, seven hundred sixty-one million, twenty-seven thousand, five hundred fifty-seven".