556461957943 has 4 divisors (see below), whose sum is σ = 561864501328. Its totient is φ = 551059414560.

The previous prime is 556461957941. The next prime is 556461958007. The reversal of 556461957943 is 349759164655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349759164655 = 5 ⋅69951832931.

It is a cyclic number.

It is not a de Polignac number, because 556461957943 - 2¹ = 556461957941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556461957941) 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, 2701271538 + ... + 2701271743.

It is an arithmetic number, because the mean of its divisors is an integer number (140466125332).

Almost surely, 2^556461957943 is an apocalyptic number.

556461957943 is a deficient number, since it is larger than the sum of its proper divisors (5402543385).

556461957943 is a wasteful number, since it uses less digits than its factorization.

556461957943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402543384.

The product of its digits is 122472000, while the sum is 64.

The spelling of 556461957943 in words is "five hundred fifty-six billion, four hundred sixty-one million, nine hundred fifty-seven thousand, nine hundred forty-three".