556161555967 has 2 divisors, whose sum is σ = 556161555968. Its totient is φ = 556161555966.

The previous prime is 556161555893. The next prime is 556161556019. The reversal of 556161555967 is 769555161655.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556161555967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556161555667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278080777983 + 278080777984.

It is an arithmetic number, because the mean of its divisors is an integer number (278080777984).

Almost surely, 2^556161555967 is an apocalyptic number.

556161555967 is a deficient number, since it is larger than the sum of its proper divisors (1).

556161555967 is an equidigital number, since it uses as much as digits as its factorization.

556161555967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42525000, while the sum is 61.

The spelling of 556161555967 in words is "five hundred fifty-six billion, one hundred sixty-one million, five hundred fifty-five thousand, nine hundred sixty-seven".