755135531557 has 6 divisors (see below), whose sum is σ = 830025005894. Its totient is φ = 686486846760.

The previous prime is 755135531543. The next prime is 755135531573.

755135531557 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 393211768356 + 361923763201 = 627066^2 + 601601^2 .

It is not a de Polignac number, because 755135531557 - 2³⁵ = 720775793189 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 (755135531587) 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, 3120394638 + ... + 3120394879.

Almost surely, 2^755135531557 is an apocalyptic number.

It is an amenable number.

755135531557 is a deficient number, since it is larger than the sum of its proper divisors (74889474337).

755135531557 is a wasteful number, since it uses less digits than its factorization.

755135531557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240789539 (or 6240789528 counting only the distinct ones).

The product of its digits is 6890625, while the sum is 52.

The spelling of 755135531557 in words is "seven hundred fifty-five billion, one hundred thirty-five million, five hundred thirty-one thousand, five hundred fifty-seven".