1966652312633 has 2 divisors, whose sum is σ = 1966652312634. Its totient is φ = 1966652312632.

The previous prime is 1966652312627. The next prime is 1966652312689. The reversal of 1966652312633 is 3362132566691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1641965457664 + 324686854969 = 1281392^2 + 569813^2 .

It is a cyclic number.

It is not a de Polignac number, because 1966652312633 - 2⁴ = 1966652312617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1966652314633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983326156316 + 983326156317.

It is an arithmetic number, because the mean of its divisors is an integer number (983326156317).

Almost surely, 2^{1966652312633} is an apocalyptic number.

It is an amenable number.

1966652312633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966652312633 is an equidigital number, since it uses as much as digits as its factorization.

1966652312633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 53.

The spelling of 1966652312633 in words is "one trillion, nine hundred sixty-six billion, six hundred fifty-two million, three hundred twelve thousand, six hundred thirty-three".