18435426056 has 16 divisors (see below), whose sum is σ = 34721433600. Its totient is φ = 9176377104.

The previous prime is 18435426043. The next prime is 18435426067. The reversal of 18435426056 is 65062453481.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18435425998 and 18435426016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5165096 + ... + 5168663.

It is an arithmetic number, because the mean of its divisors is an integer number (2170089600).

Almost surely, 2^18435426056 is an apocalyptic number.

It is an amenable number.

18435426056 is a deficient number, since it is larger than the sum of its proper divisors (16286007544).

18435426056 is a wasteful number, since it uses less digits than its factorization.

18435426056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10333988 (or 10333984 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 18435426056 in words is "eighteen billion, four hundred thirty-five million, four hundred twenty-six thousand, fifty-six".