129947637599 has 16 divisors (see below), whose sum is σ = 141533269920. Its totient is φ = 118591672320.

The previous prime is 129947637583. The next prime is 129947637613. The reversal of 129947637599 is 995736749921.

It is not a de Polignac number, because 129947637599 - 2⁴ = 129947637583 is a prime.

It is a super-2 number, since 2×129947637599² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129947637539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1171367 + ... + 1277495.

It is an arithmetic number, because the mean of its divisors is an integer number (8845829370).

Almost surely, 2^129947637599 is an apocalyptic number.

129947637599 is a deficient number, since it is larger than the sum of its proper divisors (11585632321).

129947637599 is a wasteful number, since it uses less digits than its factorization.

129947637599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107210.

The product of its digits is 231472080, while the sum is 71.

The spelling of 129947637599 in words is "one hundred twenty-nine billion, nine hundred forty-seven million, six hundred thirty-seven thousand, five hundred ninety-nine".