268516139806 has 16 divisors (see below), whose sum is σ = 404236072368. Its totient is φ = 133770873600.

The previous prime is 268516139783. The next prime is 268516139807. The reversal of 268516139806 is 608931615862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268516139807) 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, 9257166 + ... + 9286126.

It is an arithmetic number, because the mean of its divisors is an integer number (25264754523).

Almost surely, 2^268516139806 is an apocalyptic number.

268516139806 is a deficient number, since it is larger than the sum of its proper divisors (135719932562).

268516139806 is a wasteful number, since it uses less digits than its factorization.

268516139806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45627.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 268516139806 in words is "two hundred sixty-eight billion, five hundred sixteen million, one hundred thirty-nine thousand, eight hundred six".