129391817153 has 2 divisors, whose sum is σ = 129391817154. Its totient is φ = 129391817152.

The previous prime is 129391817083. The next prime is 129391817213. The reversal of 129391817153 is 351718193921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129102238864 + 289578289 = 359308^2 + 17017^2 .

It is a cyclic number.

It is not a de Polignac number, because 129391817153 - 2²² = 129387622849 is a prime.

It is not a weakly prime, because it can be changed into another prime (129391817353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64695908576 + 64695908577.

It is an arithmetic number, because the mean of its divisors is an integer number (64695908577).

Almost surely, 2^129391817153 is an apocalyptic number.

It is an amenable number.

129391817153 is a deficient number, since it is larger than the sum of its proper divisors (1).

129391817153 is an equidigital number, since it uses as much as digits as its factorization.

129391817153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 50.

The spelling of 129391817153 in words is "one hundred twenty-nine billion, three hundred ninety-one million, eight hundred seventeen thousand, one hundred fifty-three".