129802895040 has 448 divisors, whose sum is σ = 508090383360. Its totient is φ = 27340554240.

The previous prime is 129802895039. The next prime is 129802895041. The reversal of 129802895040 is 40598208921.

It is an interprime number because it is at equal distance from previous prime (129802895039) and next prime (129802895041).

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (129802895041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82204971 + ... + 82206549.

It is an arithmetic number, because the mean of its divisors is an integer number (1134130320).

Almost surely, 2^129802895040 is an apocalyptic number.

129802895040 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 129802895040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254045191680).

129802895040 is an abundant number, since it is smaller than the sum of its proper divisors (378287488320).

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

129802895040 is a wasteful number, since it uses less digits than its factorization.

129802895040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560 (or 2550 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 129802895040 in words is "one hundred twenty-nine billion, eight hundred two million, eight hundred ninety-five thousand, forty".