2568638886645 has 16 divisors (see below), whose sum is σ = 4425962389632. Its totient is φ = 1264560682560.

The previous prime is 2568638886641. The next prime is 2568638886661. The reversal of 2568638886645 is 5466888368652.

It is not a de Polignac number, because 2568638886645 - 2² = 2568638886641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2568638886641) 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, 6586253361 + ... + 6586253750.

It is an arithmetic number, because the mean of its divisors is an integer number (276622649352).

Almost surely, 2^{2568638886645} is an apocalyptic number.

It is an amenable number.

2568638886645 is a deficient number, since it is larger than the sum of its proper divisors (1857323502987).

2568638886645 is a wasteful number, since it uses less digits than its factorization.

2568638886645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13172507132.

The product of its digits is 3185049600, while the sum is 75.

The spelling of 2568638886645 in words is "two trillion, five hundred sixty-eight billion, six hundred thirty-eight million, eight hundred eighty-six thousand, six hundred forty-five".