17143779942 has 24 divisors (see below), whose sum is σ = 37159585320. Its totient is φ = 5712327360.

The previous prime is 17143779937. The next prime is 17143779979. The reversal of 17143779942 is 24997734171.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141859 + ... + 233262.

It is an arithmetic number, because the mean of its divisors is an integer number (1548316055).

Almost surely, 2^17143779942 is an apocalyptic number.

17143779942 is an abundant number, since it is smaller than the sum of its proper divisors (20015805378).

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

17143779942 is a wasteful number, since it uses less digits than its factorization.

17143779942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377668 (or 377665 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The spelling of 17143779942 in words is "seventeen billion, one hundred forty-three million, seven hundred seventy-nine thousand, nine hundred forty-two".