268228660345129 has 16 divisors (see below), whose sum is σ = 294998632830720. Its totient is φ = 241859617650000.

The previous prime is 268228660345123. The next prime is 268228660345171. The reversal of 268228660345129 is 921543066822862.

It is a cyclic number.

It is not a de Polignac number, because 268228660345129 - 2⁴¹ = 266029637089577 is a prime.

It is a super-2 number, since 2×268228660345129² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268228660345123) 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, 81850447 + ... + 85064404.

It is an arithmetic number, because the mean of its divisors is an integer number (18437414551920).

Almost surely, 2^{268228660345129} is an apocalyptic number.

It is an amenable number.

268228660345129 is a deficient number, since it is larger than the sum of its proper divisors (26769972485591).

268228660345129 is a wasteful number, since it uses less digits than its factorization.

268228660345129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166916052.

The product of its (nonzero) digits is 119439360, while the sum is 64.

The spelling of 268228660345129 in words is "two hundred sixty-eight trillion, two hundred twenty-eight billion, six hundred sixty million, three hundred forty-five thousand, one hundred twenty-nine".