17680779142 has 64 divisors (see below), whose sum is σ = 29553499584. Its totient is φ = 7882997760.

The previous prime is 17680779133. The next prime is 17680779163. The reversal of 17680779142 is 24197708671.

It is a self number, because there is not a number n which added to its sum of digits gives 17680779142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32681392 + ... + 32681932.

It is an arithmetic number, because the mean of its divisors is an integer number (461773431).

Almost surely, 2^17680779142 is an apocalyptic number.

17680779142 is a deficient number, since it is larger than the sum of its proper divisors (11872720442).

17680779142 is a wasteful number, since it uses less digits than its factorization.

17680779142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The spelling of 17680779142 in words is "seventeen billion, six hundred eighty million, seven hundred seventy-nine thousand, one hundred forty-two".