13780747699 has 2 divisors, whose sum is σ = 13780747700. Its totient is φ = 13780747698.

The previous prime is 13780747639. The next prime is 13780747711. The reversal of 13780747699 is 99674708731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13780747699 - 2⁷ = 13780747571 is a prime.

It is not a weakly prime, because it can be changed into another prime (13780747639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6890373849 + 6890373850.

It is an arithmetic number, because the mean of its divisors is an integer number (6890373850).

Almost surely, 2^13780747699 is an apocalyptic number.

13780747699 is a deficient number, since it is larger than the sum of its proper divisors (1).

13780747699 is an equidigital number, since it uses as much as digits as its factorization.

13780747699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16003008, while the sum is 61.

The spelling of 13780747699 in words is "thirteen billion, seven hundred eighty million, seven hundred forty-seven thousand, six hundred ninety-nine".