12699929887 has 2 divisors, whose sum is σ = 12699929888. Its totient is φ = 12699929886.

The previous prime is 12699929843. The next prime is 12699929903. The reversal of 12699929887 is 78892999621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12699929887 - 2¹⁹ = 12699405599 is a prime.

It is a super-2 number, since 2×12699929887² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12699929807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6349964943 + 6349964944.

It is an arithmetic number, because the mean of its divisors is an integer number (6349964944).

Almost surely, 2^12699929887 is an apocalyptic number.

12699929887 is a deficient number, since it is larger than the sum of its proper divisors (1).

12699929887 is an equidigital number, since it uses as much as digits as its factorization.

12699929887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70543872, while the sum is 70.

The spelling of 12699929887 in words is "twelve billion, six hundred ninety-nine million, nine hundred twenty-nine thousand, eight hundred eighty-seven".