17922689745 has 16 divisors (see below), whose sum is σ = 28682160000. Its totient is φ = 9556815744.

The previous prime is 17922689737. The next prime is 17922689747. The reversal of 17922689745 is 54798622971.

It is not a de Polignac number, because 17922689745 - 2³ = 17922689737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17922689747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44524 + ... + 194493.

It is an arithmetic number, because the mean of its divisors is an integer number (1792635000).

Almost surely, 2^17922689745 is an apocalyptic number.

17922689745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17922689745 is a deficient number, since it is larger than the sum of its proper divisors (10759470255).

17922689745 is a wasteful number, since it uses less digits than its factorization.

17922689745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244024.

The product of its digits is 15240960, while the sum is 60.

The spelling of 17922689745 in words is "seventeen billion, nine hundred twenty-two million, six hundred eighty-nine thousand, seven hundred forty-five".