1213385699639 has 2 divisors, whose sum is σ = 1213385699640. Its totient is φ = 1213385699638.

The previous prime is 1213385699633. The next prime is 1213385699677. The reversal of 1213385699639 is 9369965833121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213385699639 - 2¹⁶ = 1213385634103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213385699633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606692849819 + 606692849820.

It is an arithmetic number, because the mean of its divisors is an integer number (606692849820).

Almost surely, 2^{1213385699639} is an apocalyptic number.

1213385699639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213385699639 is an equidigital number, since it uses as much as digits as its factorization.

1213385699639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56687040, while the sum is 65.

The spelling of 1213385699639 in words is "one trillion, two hundred thirteen billion, three hundred eighty-five million, six hundred ninety-nine thousand, six hundred thirty-nine".