129566411040 has 192 divisors, whose sum is σ = 445729495680. Its totient is φ = 31375319040.

The previous prime is 129566411021. The next prime is 129566411071. The reversal of 129566411040 is 40114665921.

It is a self number, because there is not a number n which added to its sum of digits gives 129566411040.

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, 4934266 + ... + 4960454.

It is an arithmetic number, because the mean of its divisors is an integer number (2321507790).

Almost surely, 2^129566411040 is an apocalyptic number.

129566411040 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 129566411040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222864747840).

129566411040 is an abundant number, since it is smaller than the sum of its proper divisors (316163084640).

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

129566411040 is a wasteful number, since it uses less digits than its factorization.

129566411040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27155 (or 27147 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 129566411040 in words is "one hundred twenty-nine billion, five hundred sixty-six million, four hundred eleven thousand, forty".