556861172469 has 32 divisors (see below), whose sum is σ = 899292266496. Its totient is φ = 299212634880.

The previous prime is 556861172449. The next prime is 556861172471. The reversal of 556861172469 is 964271168655.

It is not a de Polignac number, because 556861172469 - 2⁹ = 556861171957 is a prime.

It is a super-2 number, since 2×556861172469² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556861172449) 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 31 ways as a sum of consecutive naturals, for example, 329437 + ... + 1105554.

It is an arithmetic number, because the mean of its divisors is an integer number (28102883328).

Almost surely, 2^556861172469 is an apocalyptic number.

It is an amenable number.

556861172469 is a deficient number, since it is larger than the sum of its proper divisors (342431094027).

556861172469 is a wasteful number, since it uses less digits than its factorization.

556861172469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436105.

The product of its digits is 21772800, while the sum is 60.

The spelling of 556861172469 in words is "five hundred fifty-six billion, eight hundred sixty-one million, one hundred seventy-two thousand, four hundred sixty-nine".