129569092020 has 168 divisors, whose sum is σ = 408302653920. Its totient is φ = 34522407360.

The previous prime is 129569091989. The next prime is 129569092063. The reversal of 129569092020 is 20290965921.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 21269175 + ... + 21275265.

It is an arithmetic number, because the mean of its divisors is an integer number (2430372940).

Almost surely, 2^129569092020 is an apocalyptic number.

129569092020 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 129569092020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204151326960).

129569092020 is an abundant number, since it is smaller than the sum of its proper divisors (278733561900).

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

129569092020 is a wasteful number, since it uses less digits than its factorization.

129569092020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7577 (or 7560 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 129569092020 in words is "one hundred twenty-nine billion, five hundred sixty-nine million, ninety-two thousand, twenty".