129609362080 has 48 divisors (see below), whose sum is σ = 334038678624. Its totient is φ = 47130676480.

The previous prime is 129609362059. The next prime is 129609362081. The reversal of 129609362080 is 80263906921.

It is a super-3 number, since 3×129609362080³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129609362080.

It is not an unprimeable number, because it can be changed into a prime (129609362081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36819082 + ... + 36822601.

It is an arithmetic number, because the mean of its divisors is an integer number (6959139138).

Almost surely, 2^129609362080 is an apocalyptic number.

129609362080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129609362080 is an abundant number, since it is smaller than the sum of its proper divisors (204429316544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129609362080 is a wasteful number, since it uses less digits than its factorization.

129609362080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73641709 (or 73641701 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 129609362080 in words is "one hundred twenty-nine billion, six hundred nine million, three hundred sixty-two thousand, eighty".