561136156233427 has 2 divisors, whose sum is σ = 561136156233428. Its totient is φ = 561136156233426.

The previous prime is 561136156233397. The next prime is 561136156233467. The reversal of 561136156233427 is 724332651631165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561136156233427 - 2¹⁹ = 561136155709139 is a prime.

It is not a weakly prime, because it can be changed into another prime (561136156233467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280568078116713 + 280568078116714.

It is an arithmetic number, because the mean of its divisors is an integer number (280568078116714).

Almost surely, 2^{561136156233427} is an apocalyptic number.

561136156233427 is a deficient number, since it is larger than the sum of its proper divisors (1).

561136156233427 is an equidigital number, since it uses as much as digits as its factorization.

561136156233427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 55.

The spelling of 561136156233427 in words is "five hundred sixty-one trillion, one hundred thirty-six billion, one hundred fifty-six million, two hundred thirty-three thousand, four hundred twenty-seven".