556404065377 has 6 divisors (see below), whose sum is σ = 561555533238. Its totient is φ = 551299429152.

The previous prime is 556404065309. The next prime is 556404065401. The reversal of 556404065377 is 773560404655.

It can be written as a sum of positive squares in 3 ways, for example, as 102679230096 + 453724835281 = 320436^2 + 673591^2 .

It is not a de Polignac number, because 556404065377 - 2¹¹ = 556404063329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556404065977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23403828 + ... + 23427589.

It is an arithmetic number, because the mean of its divisors is an integer number (93592588873).

Almost surely, 2^556404065377 is an apocalyptic number.

It is an amenable number.

556404065377 is a deficient number, since it is larger than the sum of its proper divisors (5151467861).

556404065377 is an equidigital number, since it uses as much as digits as its factorization.

556404065377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46831635 (or 46831526 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 52.

The spelling of 556404065377 in words is "five hundred fifty-six billion, four hundred four million, sixty-five thousand, three hundred seventy-seven".