17945603056 has 40 divisors (see below), whose sum is σ = 36724680720. Its totient is φ = 8471494656.

The previous prime is 17945603033. The next prime is 17945603057. The reversal of 17945603056 is 65030654971.

It is a junction number, because it is equal to n+sod(n) for n = 17945602997 and 17945603015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17945603057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11665 + ... + 189808.

It is an arithmetic number, because the mean of its divisors is an integer number (918117018).

Almost surely, 2^17945603056 is an apocalyptic number.

17945603056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

17945603056 is an abundant number, since it is smaller than the sum of its proper divisors (18779077664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17945603056 is a wasteful number, since it uses less digits than its factorization.

17945603056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201793 (or 201787 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 17945603056 in words is "seventeen billion, nine hundred forty-five million, six hundred three thousand, fifty-six".