1213387805659 has 2 divisors, whose sum is σ = 1213387805660. Its totient is φ = 1213387805658.

The previous prime is 1213387805599. The next prime is 1213387805737. The reversal of 1213387805659 is 9565087833121.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9565087833121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213387805659 - 2¹¹ = 1213387803611 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213387805459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606693902829 + 606693902830.

It is an arithmetic number, because the mean of its divisors is an integer number (606693902830).

Almost surely, 2^{1213387805659} is an apocalyptic number.

1213387805659 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213387805659 is an equidigital number, since it uses as much as digits as its factorization.

1213387805659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 1213387805659 in words is "one trillion, two hundred thirteen billion, three hundred eighty-seven million, eight hundred five thousand, six hundred fifty-nine".