2856378558601 has 4 divisors (see below), whose sum is σ = 3024400826772. Its totient is φ = 2688356290432.

The previous prime is 2856378558589. The next prime is 2856378558619. The reversal of 2856378558601 is 1068558736582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1738378962576 + 1117999596025 = 1318476^2 + 1057355^2 .

It is a cyclic number.

It is not a de Polignac number, because 2856378558601 - 2⁵ = 2856378558569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2856378558641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84011134060 + ... + 84011134093.

It is an arithmetic number, because the mean of its divisors is an integer number (756100206693).

Almost surely, 2^{2856378558601} is an apocalyptic number.

It is an amenable number.

2856378558601 is a deficient number, since it is larger than the sum of its proper divisors (168022268171).

2856378558601 is a wasteful number, since it uses less digits than its factorization.

2856378558601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168022268170.

The product of its (nonzero) digits is 96768000, while the sum is 64.

The spelling of 2856378558601 in words is "two trillion, eight hundred fifty-six billion, three hundred seventy-eight million, five hundred fifty-eight thousand, six hundred one".