268257138452216 has 16 divisors (see below), whose sum is σ = 503875530937800. Its totient is φ = 133890330202144.

The previous prime is 268257138452123. The next prime is 268257138452221. The reversal of 268257138452216 is 612254831752862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29779873211 + ... + 29779882218.

Almost surely, 2^{268257138452216} is an apocalyptic number.

It is an amenable number.

268257138452216 is a deficient number, since it is larger than the sum of its proper divisors (235618392485584).

268257138452216 is a wasteful number, since it uses less digits than its factorization.

268257138452216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59559755998 (or 59559755994 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 62.

The spelling of 268257138452216 in words is "two hundred sixty-eight trillion, two hundred fifty-seven billion, one hundred thirty-eight million, four hundred fifty-two thousand, two hundred sixteen".