7516556556157 has 6 divisors (see below), whose sum is σ = 8262000181694. Its totient is φ = 6833233232760.

The previous prime is 7516556556079. The next prime is 7516556556167.

7516556556157 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 5952140969401 + 1564415586756 = 2439701^2 + 1250766^2 .

It is not a de Polignac number, because 7516556556157 - 2²³ = 7516548167549 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 (7516556556167) 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, 31060150938 + ... + 31060151179.

Almost surely, 2^{7516556556157} is an apocalyptic number.

It is an amenable number.

7516556556157 is a deficient number, since it is larger than the sum of its proper divisors (745443625537).

7516556556157 is a wasteful number, since it uses less digits than its factorization.

7516556556157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62120302139 (or 62120302128 counting only the distinct ones).

The product of its digits is 165375000, while the sum is 64.

The spelling of 7516556556157 in words is "seven trillion, five hundred sixteen billion, five hundred fifty-six million, five hundred fifty-six thousand, one hundred fifty-seven".