268991756207 has 8 divisors (see below), whose sum is σ = 283965216000. Its totient is φ = 254099896344.

The previous prime is 268991756183. The next prime is 268991756251. The reversal of 268991756207 is 702657199862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268991756207 - 2³⁴ = 251811887023 is a prime.

It is a super-2 number, since 2×268991756207² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 268991756207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268991750207) 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, 20393207 + ... + 20406392.

It is an arithmetic number, because the mean of its divisors is an integer number (35495652000).

Almost surely, 2^268991756207 is an apocalyptic number.

268991756207 is a deficient number, since it is larger than the sum of its proper divisors (14973459793).

268991756207 is a wasteful number, since it uses less digits than its factorization.

268991756207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40799965.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 268991756207 in words is "two hundred sixty-eight billion, nine hundred ninety-one million, seven hundred fifty-six thousand, two hundred seven".