556666501643 has 8 divisors (see below), whose sum is σ = 643855231488. Its totient is φ = 471394007784.

The previous prime is 556666501591. The next prime is 556666501649. The reversal of 556666501643 is 346105666655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 556666501643 - 2¹⁶ = 556666436107 is a prime.

It is a super-2 number, since 2×556666501643² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (556666501649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479058371 + ... + 479059532.

It is an arithmetic number, because the mean of its divisors is an integer number (80481903936).

Almost surely, 2^556666501643 is an apocalyptic number.

556666501643 is a deficient number, since it is larger than the sum of its proper divisors (87188729845).

556666501643 is an equidigital number, since it uses as much as digits as its factorization.

556666501643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958117993.

The product of its (nonzero) digits is 11664000, while the sum is 53.

The spelling of 556666501643 in words is "five hundred fifty-six billion, six hundred sixty-six million, five hundred one thousand, six hundred forty-three".