129313769251 has 2 divisors, whose sum is σ = 129313769252. Its totient is φ = 129313769250.

The previous prime is 129313769243. The next prime is 129313769317. The reversal of 129313769251 is 152967313921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129313769251 - 2³ = 129313769243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129313769195 and 129313769204.

It is not a weakly prime, because it can be changed into another prime (129313766251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64656884625 + 64656884626.

It is an arithmetic number, because the mean of its divisors is an integer number (64656884626).

Almost surely, 2^129313769251 is an apocalyptic number.

129313769251 is a deficient number, since it is larger than the sum of its proper divisors (1).

129313769251 is an equidigital number, since it uses as much as digits as its factorization.

129313769251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The spelling of 129313769251 in words is "one hundred twenty-nine billion, three hundred thirteen million, seven hundred sixty-nine thousand, two hundred fifty-one".