556724787427655 has 48 divisors (see below), whose sum is σ = 849851250447360. Its totient is φ = 342656189853120.

The previous prime is 556724787427603. The next prime is 556724787427657.

556724787427655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556724787427655 - 2¹⁶ = 556724787362119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 556724787427655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556724787427657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 831678329 + ... + 832347458.

It is an arithmetic number, because the mean of its divisors is an integer number (17705234384320).

Almost surely, 2^{556724787427655} is an apocalyptic number.

556724787427655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556724787427655 is a deficient number, since it is larger than the sum of its proper divisors (293126463019705).

556724787427655 is a wasteful number, since it uses less digits than its factorization.

556724787427655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664025900 (or 1664025889 counting only the distinct ones).

The product of its digits is 27659520000, while the sum is 80.

The spelling of 556724787427655 in words is "five hundred fifty-six trillion, seven hundred twenty-four billion, seven hundred eighty-seven million, four hundred twenty-seven thousand, six hundred fifty-five".