56861442419 has 2 divisors, whose sum is σ = 56861442420. Its totient is φ = 56861442418.

The previous prime is 56861442401. The next prime is 56861442433. The reversal of 56861442419 is 91424416865.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56861442419 - 2¹² = 56861438323 is a prime.

It is a super-2 number, since 2×56861442419² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (56861742419) 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 as a sum of consecutive naturals, namely, 28430721209 + 28430721210.

It is an arithmetic number, because the mean of its divisors is an integer number (28430721210).

Almost surely, 2^56861442419 is an apocalyptic number.

56861442419 is a deficient number, since it is larger than the sum of its proper divisors (1).

56861442419 is an equidigital number, since it uses as much as digits as its factorization.

56861442419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 50.

The spelling of 56861442419 in words is "fifty-six billion, eight hundred sixty-one million, four hundred forty-two thousand, four hundred nineteen".