268940006729 has 2 divisors, whose sum is σ = 268940006730. Its totient is φ = 268940006728.

The previous prime is 268940006701. The next prime is 268940006761. The reversal of 268940006729 is 927600049862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220573001104 + 48367005625 = 469652^2 + 219925^2 .

It is a cyclic number.

It is not a de Polignac number, because 268940006729 - 2¹² = 268940002633 is a prime.

It is not a weakly prime, because it can be changed into another prime (268940006329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134470003364 + 134470003365.

It is an arithmetic number, because the mean of its divisors is an integer number (134470003365).

Almost surely, 2^268940006729 is an apocalyptic number.

It is an amenable number.

268940006729 is a deficient number, since it is larger than the sum of its proper divisors (1).

268940006729 is an equidigital number, since it uses as much as digits as its factorization.

268940006729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 268940006729 in words is "two hundred sixty-eight billion, nine hundred forty million, six thousand, seven hundred twenty-nine".