556941891377 has 4 divisors (see below), whose sum is σ = 556945735920. Its totient is φ = 556938046836.

The previous prime is 556941891371. The next prime is 556941891409. The reversal of 556941891377 is 773198149655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556941891377 is a prime.

It is a super-2 number, since 2×556941891377² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556941891371) 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, 1696103 + ... + 1997660.

It is an arithmetic number, because the mean of its divisors is an integer number (139236433980).

Almost surely, 2^556941891377 is an apocalyptic number.

It is an amenable number.

556941891377 is a deficient number, since it is larger than the sum of its proper divisors (3844543).

556941891377 is a wasteful number, since it uses less digits than its factorization.

556941891377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844542.

The product of its digits is 57153600, while the sum is 65.

The spelling of 556941891377 in words is "five hundred fifty-six billion, nine hundred forty-one million, eight hundred ninety-one thousand, three hundred seventy-seven".