17959129993 has 6 divisors (see below), whose sum is σ = 20891232906. Its totient is φ = 15393539952.

The previous prime is 17959129957. The next prime is 17959130023. The reversal of 17959129993 is 39992195971.

It can be written as a sum of positive squares in only one way, i.e., 9400659849 + 8558470144 = 96957^2 + 92512^2 .

It is a de Polignac number, because none of the positive numbers 2^k-17959129993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17959129913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 183256380 + ... + 183256477.

It is an arithmetic number, because the mean of its divisors is an integer number (3481872151).

Almost surely, 2^17959129993 is an apocalyptic number.

It is an amenable number.

17959129993 is a deficient number, since it is larger than the sum of its proper divisors (2932102913).

17959129993 is an equidigital number, since it uses as much as digits as its factorization.

17959129993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366512871 (or 366512864 counting only the distinct ones).

The product of its digits is 12400290, while the sum is 64.

The spelling of 17959129993 in words is "seventeen billion, nine hundred fifty-nine million, one hundred twenty-nine thousand, nine hundred ninety-three".