1436868686321 has 2 divisors, whose sum is σ = 1436868686322. Its totient is φ = 1436868686320.

The previous prime is 1436868686269. The next prime is 1436868686359. The reversal of 1436868686321 is 1236868686341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404094653025 + 32774033296 = 1184945^2 + 181036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1436868686321 - 2⁶ = 1436868686257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1436868686371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 718434343160 + 718434343161.

It is an arithmetic number, because the mean of its divisors is an integer number (718434343161).

Almost surely, 2^{1436868686321} is an apocalyptic number.

It is an amenable number.

1436868686321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1436868686321 is an equidigital number, since it uses as much as digits as its factorization.

1436868686321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47775744, while the sum is 62.

The spelling of 1436868686321 in words is "one trillion, four hundred thirty-six billion, eight hundred sixty-eight million, six hundred eighty-six thousand, three hundred twenty-one".