129104050950 has 540 divisors, whose sum is σ = 428353647228. Its totient is φ = 27871905600.

The previous prime is 129104050949. The next prime is 129104050951. The reversal of 129104050950 is 59050401921.

129104050950 is a `hidden beast` number, since 12 + 91 + 0 + 4 + 0 + 509 + 50 = 666.

It is an interprime number because it is at equal distance from previous prime (129104050949) and next prime (129104050951).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129104050951) by changing a digit.

It is a polite number, since it can be written in 269 ways as a sum of consecutive naturals, for example, 390042285 + ... + 390042615.

Almost surely, 2^129104050950 is an apocalyptic number.

129104050950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129104050950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214176823614).

129104050950 is an abundant number, since it is smaller than the sum of its proper divisors (299249596278).

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

129104050950 is a wasteful number, since it uses less digits than its factorization.

129104050950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The spelling of 129104050950 in words is "one hundred twenty-nine billion, one hundred four million, fifty thousand, nine hundred fifty".