17742995720 has 64 divisors (see below), whose sum is σ = 42062328000. Its totient is φ = 6717351168.

The previous prime is 17742995681. The next prime is 17742995723. The reversal of 17742995720 is 2759924771.

It is not an unprimeable number, because it can be changed into a prime (17742995723) 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, 843086 + ... + 863874.

It is an arithmetic number, because the mean of its divisors is an integer number (657223875).

Almost surely, 2^17742995720 is an apocalyptic number.

17742995720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17742995720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21031164000).

17742995720 is an abundant number, since it is smaller than the sum of its proper divisors (24319332280).

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

17742995720 is a wasteful number, since it uses less digits than its factorization.

17742995720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21942 (or 21938 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 17742995720 in words is "seventeen billion, seven hundred forty-two million, nine hundred ninety-five thousand, seven hundred twenty".