1365693997691 has 2 divisors, whose sum is σ = 1365693997692. Its totient is φ = 1365693997690.

The previous prime is 1365693997673. The next prime is 1365693997699. The reversal of 1365693997691 is 1967993965631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1365693997691 - 2⁶ = 1365693997627 is a prime.

It is a super-2 number, since 2×1365693997691² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1365693997699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682846998845 + 682846998846.

It is an arithmetic number, because the mean of its divisors is an integer number (682846998846).

Almost surely, 2^{1365693997691} is an apocalyptic number.

1365693997691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365693997691 is an equidigital number, since it uses as much as digits as its factorization.

1365693997691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 446410440, while the sum is 74.

The spelling of 1365693997691 in words is "one trillion, three hundred sixty-five billion, six hundred ninety-three million, nine hundred ninety-seven thousand, six hundred ninety-one".