56861426818 has 48 divisors (see below), whose sum is σ = 101175649344. Its totient is φ = 23890839840.

The previous prime is 56861426813. The next prime is 56861427047. The reversal of 56861426818 is 81862416865.

It is not an unprimeable number, because it can be changed into a prime (56861426813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1819755 + ... + 1850737.

It is an arithmetic number, because the mean of its divisors is an integer number (2107826028).

Almost surely, 2^56861426818 is an apocalyptic number.

56861426818 is a deficient number, since it is larger than the sum of its proper divisors (44314222526).

56861426818 is a wasteful number, since it uses less digits than its factorization.

56861426818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31367 (or 31360 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 55.

The spelling of 56861426818 in words is "fifty-six billion, eight hundred sixty-one million, four hundred twenty-six thousand, eight hundred eighteen".