17981013129 has 8 divisors (see below), whose sum is σ = 24207448512. Its totient is φ = 11870959920.

The previous prime is 17981013097. The next prime is 17981013157. The reversal of 17981013129 is 92131018971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 17981013129 - 2⁵ = 17981013097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17981013329) 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, 29095182 + ... + 29095799.

It is an arithmetic number, because the mean of its divisors is an integer number (3025931064).

Almost surely, 2^17981013129 is an apocalyptic number.

It is an amenable number.

17981013129 is a deficient number, since it is larger than the sum of its proper divisors (6226435383).

17981013129 is a wasteful number, since it uses less digits than its factorization.

17981013129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58191087.

The product of its (nonzero) digits is 27216, while the sum is 42.

The spelling of 17981013129 in words is "seventeen billion, nine hundred eighty-one million, thirteen thousand, one hundred twenty-nine".