1351155752557 has 6 divisors (see below), whose sum is σ = 1463085815082. Its totient is φ = 1247220694512.

The previous prime is 1351155752539. The next prime is 1351155752621. The reversal of 1351155752557 is 7552575511531.

It can be written as a sum of positive squares in 3 ways, for example, as 77031782116 + 1274123970441 = 277546^2 + 1128771^2 .

It is not a de Polignac number, because 1351155752557 - 2²⁷ = 1351021534829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351155753557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3997502058 + ... + 3997502395.

It is an arithmetic number, because the mean of its divisors is an integer number (243847635847).

Almost surely, 2^{1351155752557} is an apocalyptic number.

It is an amenable number.

1351155752557 is a deficient number, since it is larger than the sum of its proper divisors (111930062525).

1351155752557 is an equidigital number, since it uses as much as digits as its factorization.

1351155752557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7995004479 (or 7995004466 counting only the distinct ones).

The product of its digits is 4593750, while the sum is 52.

The spelling of 1351155752557 in words is "one trillion, three hundred fifty-one billion, one hundred fifty-five million, seven hundred fifty-two thousand, five hundred fifty-seven".