129104746236 has 216 divisors, whose sum is σ = 359890527360. Its totient is φ = 40461319584.

The previous prime is 129104746219. The next prime is 129104746241. The reversal of 129104746236 is 632647401921.

129104746236 is a `hidden beast` number, since 1 + 2 + 9 + 10 + 4 + 7 + 4 + 623 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 129104746191 and 129104746200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 48772665 + ... + 48775311.

Almost surely, 2^129104746236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129104746236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179945263680).

129104746236 is an abundant number, since it is smaller than the sum of its proper divisors (230785781124).

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

129104746236 is a wasteful number, since it uses less digits than its factorization.

129104746236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843 (or 2810 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 129104746236 in words is "one hundred twenty-nine billion, one hundred four million, seven hundred forty-six thousand, two hundred thirty-six".