556981966767 has 8 divisors (see below), whose sum is σ = 743882428800. Its totient is φ = 370701407960.

The previous prime is 556981966747. The next prime is 556981966787. The reversal of 556981966767 is 767669189655.

It is an interprime number because it is at equal distance from previous prime (556981966747) and next prime (556981966787).

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

It is a cyclic number.

It is not a de Polignac number, because 556981966767 - 2⁸ = 556981966511 is a prime.

It is a super-2 number, since 2×556981966767² (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 (556981966747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154973709 + ... + 154977302.

It is an arithmetic number, because the mean of its divisors is an integer number (92985303600).

Almost surely, 2^556981966767 is an apocalyptic number.

556981966767 is a deficient number, since it is larger than the sum of its proper divisors (186900462033).

556981966767 is a wasteful number, since it uses less digits than its factorization.

556981966767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309951613.

The product of its digits is 1028764800, while the sum is 75.

The spelling of 556981966767 in words is "five hundred fifty-six billion, nine hundred eighty-one million, nine hundred sixty-six thousand, seven hundred sixty-seven".