2566740645258 has 16 divisors (see below), whose sum is σ = 5133499574880. Its totient is φ = 855577167696.

The previous prime is 2566740645251. The next prime is 2566740645281. The reversal of 2566740645258 is 8525460476652.

It is not an unprimeable number, because it can be changed into a prime (2566740645251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1650816 + ... + 2803332.

It is an arithmetic number, because the mean of its divisors is an integer number (320843723430).

Almost surely, 2^{2566740645258} is an apocalyptic number.

2566740645258 is an abundant number, since it is smaller than the sum of its proper divisors (2566758929622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2566740645258 is a wasteful number, since it uses less digits than its factorization.

2566740645258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523701.

The product of its (nonzero) digits is 96768000, while the sum is 60.

The spelling of 2566740645258 in words is "two trillion, five hundred sixty-six billion, seven hundred forty million, six hundred forty-five thousand, two hundred fifty-eight".