568161961619 has 4 divisors (see below), whose sum is σ = 649327956144. Its totient is φ = 486995967096.

The previous prime is 568161961561. The next prime is 568161961621. The reversal of 568161961619 is 916169161865.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 568161961619 - 2⁸ = 568161961363 is a prime.

It is a super-2 number, since 2×568161961619² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (568161961669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40582997252 + ... + 40582997265.

It is an arithmetic number, because the mean of its divisors is an integer number (162331989036).

Almost surely, 2^568161961619 is an apocalyptic number.

568161961619 is a deficient number, since it is larger than the sum of its proper divisors (81165994525).

568161961619 is an equidigital number, since it uses as much as digits as its factorization.

568161961619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81165994524.

The product of its digits is 4199040, while the sum is 59.

The spelling of 568161961619 in words is "five hundred sixty-eight billion, one hundred sixty-one million, nine hundred sixty-one thousand, six hundred nineteen".