129437267957 has 2 divisors, whose sum is σ = 129437267958. Its totient is φ = 129437267956.

The previous prime is 129437267819. The next prime is 129437268019. The reversal of 129437267957 is 759762734921.

It is a happy number.

It is an a-pointer prime, because the next prime (129437268019) can be obtained adding 129437267957 to its sum of digits (62).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122588215876 + 6849052081 = 350126^2 + 82759^2 .

It is an emirp because it is prime and its reverse (759762734921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129437267957 - 2²⁴ = 129420490741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129437267957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129437267257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64718633978 + 64718633979.

It is an arithmetic number, because the mean of its divisors is an integer number (64718633979).

Almost surely, 2^129437267957 is an apocalyptic number.

It is an amenable number.

129437267957 is a deficient number, since it is larger than the sum of its proper divisors (1).

129437267957 is an equidigital number, since it uses as much as digits as its factorization.

129437267957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40007520, while the sum is 62.

The spelling of 129437267957 in words is "one hundred twenty-nine billion, four hundred thirty-seven million, two hundred sixty-seven thousand, nine hundred fifty-seven".