2556726578367 has 16 divisors (see below), whose sum is σ = 3671259096960. Its totient is φ = 1573343648352.

The previous prime is 2556726578297. The next prime is 2556726578387. The reversal of 2556726578367 is 7638756276552.

It is not a de Polignac number, because 2556726578367 - 2¹⁰ = 2556726577343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556726578387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1928148 + ... + 2971734.

It is an arithmetic number, because the mean of its divisors is an integer number (229453693560).

Almost surely, 2^{2556726578367} is an apocalyptic number.

2556726578367 is a deficient number, since it is larger than the sum of its proper divisors (1114532518593).

2556726578367 is a wasteful number, since it uses less digits than its factorization.

2556726578367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106422.

The product of its digits is 889056000, while the sum is 69.

The spelling of 2556726578367 in words is "two trillion, five hundred fifty-six billion, seven hundred twenty-six million, five hundred seventy-eight thousand, three hundred sixty-seven".