2687566543157 has 2 divisors, whose sum is σ = 2687566543158. Its totient is φ = 2687566543156.

The previous prime is 2687566543099. The next prime is 2687566543241. The reversal of 2687566543157 is 7513456657862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2307865335556 + 379701207601 = 1519166^2 + 616199^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687566543157 - 2²⁴ = 2687549765941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2687566543093 and 2687566543102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2687566543657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343783271578 + 1343783271579.

It is an arithmetic number, because the mean of its divisors is an integer number (1343783271579).

Almost surely, 2^{2687566543157} is an apocalyptic number.

It is an amenable number.

2687566543157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2687566543157 is an equidigital number, since it uses as much as digits as its factorization.

2687566543157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016000, while the sum is 65.

The spelling of 2687566543157 in words is "two trillion, six hundred eighty-seven billion, five hundred sixty-six million, five hundred forty-three thousand, one hundred fifty-seven".