556994499655 has 48 divisors (see below), whose sum is σ = 753926177952. Its totient is φ = 391764806400.

The previous prime is 556994499613. The next prime is 556994499697.

556994499655 is nontrivially palindromic in base 10.

556994499655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (556994499613) and next prime (556994499697).

It is not a de Polignac number, because 556994499655 - 2¹³ = 556994491463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123308457 + ... + 123312973.

It is an arithmetic number, because the mean of its divisors is an integer number (15706795374).

Almost surely, 2^556994499655 is an apocalyptic number.

556994499655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556994499655 is a deficient number, since it is larger than the sum of its proper divisors (196931678297).

556994499655 is a wasteful number, since it uses less digits than its factorization.

556994499655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928 (or 6897 counting only the distinct ones).

The product of its digits is 2361960000, while the sum is 76.

The spelling of 556994499655 in words is "five hundred fifty-six billion, nine hundred ninety-four million, four hundred ninety-nine thousand, six hundred fifty-five".