129609963340 has 72 divisors (see below), whose sum is σ = 321522043248. Its totient is φ = 43505429760.

The previous prime is 129609963293. The next prime is 129609963359. The reversal of 129609963340 is 43369906921.

129609963340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×129609963340² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1705827 + ... + 1780186.

It is an arithmetic number, because the mean of its divisors is an integer number (4465583934).

Almost surely, 2^129609963340 is an apocalyptic number.

129609963340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129609963340 is an abundant number, since it is smaller than the sum of its proper divisors (191912079908).

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

129609963340 is a wasteful number, since it uses less digits than its factorization.

129609963340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486059 (or 3486044 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 52.

The spelling of 129609963340 in words is "one hundred twenty-nine billion, six hundred nine million, nine hundred sixty-three thousand, three hundred forty".