129632575637 has 2 divisors, whose sum is σ = 129632575638. Its totient is φ = 129632575636.

The previous prime is 129632575621. The next prime is 129632575649. The reversal of 129632575637 is 736575236921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111529949521 + 18102626116 = 333961^2 + 134546^2 .

It is a cyclic number.

It is not a de Polignac number, because 129632575637 - 2⁴ = 129632575621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129632575687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64816287818 + 64816287819.

It is an arithmetic number, because the mean of its divisors is an integer number (64816287819).

Almost surely, 2^129632575637 is an apocalyptic number.

It is an amenable number.

129632575637 is a deficient number, since it is larger than the sum of its proper divisors (1).

129632575637 is an equidigital number, since it uses as much as digits as its factorization.

129632575637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14288400, while the sum is 56.

The spelling of 129632575637 in words is "one hundred twenty-nine billion, six hundred thirty-two million, five hundred seventy-five thousand, six hundred thirty-seven".