12699660047 has 2 divisors, whose sum is σ = 12699660048. Its totient is φ = 12699660046.

The previous prime is 12699660011. The next prime is 12699660073. The reversal of 12699660047 is 74006699621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12699660047 - 2¹⁶ = 12699594511 is a prime.

It is a super-2 number, since 2×12699660047² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12699659977 and 12699660004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12699660007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6349830023 + 6349830024.

It is an arithmetic number, because the mean of its divisors is an integer number (6349830024).

Almost surely, 2^12699660047 is an apocalyptic number.

12699660047 is a deficient number, since it is larger than the sum of its proper divisors (1).

12699660047 is an equidigital number, since it uses as much as digits as its factorization.

12699660047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 12699660047 in words is "twelve billion, six hundred ninety-nine million, six hundred sixty thousand, forty-seven".