129395278832 has 10 divisors (see below), whose sum is σ = 250703352768. Its totient is φ = 64697639408.

The previous prime is 129395278799. The next prime is 129395278849. The reversal of 129395278832 is 238872593921.

It is a super-2 number, since 2×129395278832² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 4043602448 + ... + 4043602479.

Almost surely, 2^129395278832 is an apocalyptic number.

It is an amenable number.

129395278832 is a deficient number, since it is larger than the sum of its proper divisors (121308073936).

129395278832 is an equidigital number, since it uses as much as digits as its factorization.

129395278832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087204935 (or 8087204929 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 59.

The spelling of 129395278832 in words is "one hundred twenty-nine billion, three hundred ninety-five million, two hundred seventy-eight thousand, eight hundred thirty-two".