1368682728261 has 16 divisors (see below), whose sum is σ = 1915261497216. Its totient is φ = 867738191936.

The previous prime is 1368682728251. The next prime is 1368682728289. The reversal of 1368682728261 is 1628272868631.

It is a cyclic number.

It is not a de Polignac number, because 1368682728261 - 2⁹ = 1368682727749 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1368682728195 and 1368682728204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368682728221) 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, 57317490 + ... + 57341363.

It is an arithmetic number, because the mean of its divisors is an integer number (119703843576).

Almost surely, 2^{1368682728261} is an apocalyptic number.

It is an amenable number.

1368682728261 is a deficient number, since it is larger than the sum of its proper divisors (546578768955).

1368682728261 is a wasteful number, since it uses less digits than its factorization.

1368682728261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114659052.

The product of its digits is 18579456, while the sum is 60.

The spelling of 1368682728261 in words is "one trillion, three hundred sixty-eight billion, six hundred eighty-two million, seven hundred twenty-eight thousand, two hundred sixty-one".