129182017499 has 2 divisors, whose sum is σ = 129182017500. Its totient is φ = 129182017498.

The previous prime is 129182017487. The next prime is 129182017513. The reversal of 129182017499 is 994710281921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129182017499 is a prime.

It is a super-2 number, since 2×129182017499² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129182017499.

It is not a weakly prime, because it can be changed into another prime (129182017429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64591008749 + 64591008750.

It is an arithmetic number, because the mean of its divisors is an integer number (64591008750).

Almost surely, 2^129182017499 is an apocalyptic number.

129182017499 is a deficient number, since it is larger than the sum of its proper divisors (1).

129182017499 is an equidigital number, since it uses as much as digits as its factorization.

129182017499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 53.

The spelling of 129182017499 in words is "one hundred twenty-nine billion, one hundred eighty-two million, seventeen thousand, four hundred ninety-nine".