268678500571 has 4 divisors (see below), whose sum is σ = 289346077552. Its totient is φ = 248010923592.

The previous prime is 268678500557. The next prime is 268678500613. The reversal of 268678500571 is 175005876862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268678500571 - 2⁷ = 268678500443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268678504571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10333788471 + ... + 10333788496.

It is an arithmetic number, because the mean of its divisors is an integer number (72336519388).

Almost surely, 2^268678500571 is an apocalyptic number.

268678500571 is a deficient number, since it is larger than the sum of its proper divisors (20667576981).

268678500571 is a wasteful number, since it uses less digits than its factorization.

268678500571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20667576980.

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 268678500571 in words is "two hundred sixty-eight billion, six hundred seventy-eight million, five hundred thousand, five hundred seventy-one".