17291868139 has 16 divisors (see below), whose sum is σ = 21683858112. Its totient is φ = 13423333248.

The previous prime is 17291868127. The next prime is 17291868157. The reversal of 17291868139 is 93186819271.

It is a happy number.

It is not a de Polignac number, because 17291868139 - 2¹³ = 17291859947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17291868139.

It is not an unprimeable number, because it can be changed into a prime (17291868199) 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, 1787824 + ... + 1797469.

It is an arithmetic number, because the mean of its divisors is an integer number (1355241132).

Almost surely, 2^17291868139 is an apocalyptic number.

17291868139 is a deficient number, since it is larger than the sum of its proper divisors (4391989973).

17291868139 is a wasteful number, since it uses less digits than its factorization.

17291868139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585366.

The product of its digits is 1306368, while the sum is 55.

The spelling of 17291868139 in words is "seventeen billion, two hundred ninety-one million, eight hundred sixty-eight thousand, one hundred thirty-nine".