129476542500 has 240 divisors, whose sum is σ = 420084280000. Its totient is φ = 34476192000.

The previous prime is 129476542483. The next prime is 129476542501. The reversal of 129476542500 is 5245674921.

129476542500 is a `hidden beast` number, since 1 + 2 + 9 + 47 + 65 + 42 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (129476542501) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 76206651 + ... + 76208349.

Almost surely, 2^129476542500 is an apocalyptic number.

129476542500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129476542500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210042140000).

129476542500 is an abundant number, since it is smaller than the sum of its proper divisors (290607737500).

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

129476542500 is a wasteful number, since it uses less digits than its factorization.

129476542500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861 (or 2838 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 129476542500 in words is "one hundred twenty-nine billion, four hundred seventy-six million, five hundred forty-two thousand, five hundred".