556841400959 has 4 divisors (see below), whose sum is σ = 589596777504. Its totient is φ = 524086024416.

The previous prime is 556841400949. The next prime is 556841400961. The reversal of 556841400959 is 959004148655.

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

It is a cyclic number.

It is not a de Polignac number, because 556841400959 - 2¹² = 556841396863 is a prime.

It is a super-2 number, since 2×556841400959² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556841400949) 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, 16377688247 + ... + 16377688280.

It is an arithmetic number, because the mean of its divisors is an integer number (147399194376).

Almost surely, 2^556841400959 is an apocalyptic number.

556841400959 is a deficient number, since it is larger than the sum of its proper divisors (32755376545).

556841400959 is a wasteful number, since it uses less digits than its factorization.

556841400959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32755376544.

The product of its (nonzero) digits is 7776000, while the sum is 56.

The spelling of 556841400959 in words is "five hundred fifty-six billion, eight hundred forty-one million, four hundred thousand, nine hundred fifty-nine".