129301840836 has 96 divisors (see below), whose sum is σ = 403280640000. Its totient is φ = 34998990624.

The previous prime is 129301840783. The next prime is 129301840861. The reversal of 129301840836 is 638048103921.

It is a junction number, because it is equal to n+sod(n) for n = 129301840791 and 129301840800.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4486536 + ... + 4515263.

It is an arithmetic number, because the mean of its divisors is an integer number (4200840000).

Almost surely, 2^129301840836 is an apocalyptic number.

It is an amenable number.

129301840836 is an abundant number, since it is smaller than the sum of its proper divisors (273978799164).

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

129301840836 is a wasteful number, since it uses less digits than its factorization.

129301840836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9001838 (or 9001830 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 129301840836 in words is "one hundred twenty-nine billion, three hundred one million, eight hundred forty thousand, eight hundred thirty-six".