1357706666639 has 2 divisors, whose sum is σ = 1357706666640. Its totient is φ = 1357706666638.

The previous prime is 1357706666621. The next prime is 1357706666807. The reversal of 1357706666639 is 9366666077531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1357706666639 - 2⁴⁰ = 258195038863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1357706666339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678853333319 + 678853333320.

It is an arithmetic number, because the mean of its divisors is an integer number (678853333320).

Almost surely, 2^{1357706666639} is an apocalyptic number.

1357706666639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1357706666639 is an equidigital number, since it uses as much as digits as its factorization.

1357706666639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 154314720, while the sum is 65.

The spelling of 1357706666639 in words is "one trillion, three hundred fifty-seven billion, seven hundred six million, six hundred sixty-six thousand, six hundred thirty-nine".