268829758781 has 16 divisors (see below), whose sum is σ = 276061824000. Its totient is φ = 261719472768.

The previous prime is 268829758721. The next prime is 268829758783. The reversal of 268829758781 is 187857928862.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268829758781 is a prime.

It is a super-2 number, since 2×268829758781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268829758783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1529276 + ... + 1695978.

It is an arithmetic number, because the mean of its divisors is an integer number (17253864000).

Almost surely, 2^268829758781 is an apocalyptic number.

It is an amenable number.

268829758781 is a deficient number, since it is larger than the sum of its proper divisors (7232065219).

268829758781 is a wasteful number, since it uses less digits than its factorization.

268829758781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167068.

The product of its digits is 216760320, while the sum is 71.

The spelling of 268829758781 in words is "two hundred sixty-eight billion, eight hundred twenty-nine million, seven hundred fifty-eight thousand, seven hundred eighty-one".