556640243450 has 12 divisors (see below), whose sum is σ = 1035350852910. Its totient is φ = 222656097360.

The previous prime is 556640243381. The next prime is 556640243513. The reversal of 556640243450 is 54342046655.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 462020637841 + 94619605609 = 679721^2 + 307603^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5566402385 + ... + 5566402484.

Almost surely, 2^556640243450 is an apocalyptic number.

556640243450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

556640243450 is a deficient number, since it is larger than the sum of its proper divisors (478710609460).

556640243450 is a wasteful number, since it uses less digits than its factorization.

556640243450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11132804881 (or 11132804876 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 556640243450 in words is "five hundred fifty-six billion, six hundred forty million, two hundred forty-three thousand, four hundred fifty".