129454022880 has 384 divisors, whose sum is σ = 557649792000. Its totient is φ = 27313293312.

The previous prime is 129454022861. The next prime is 129454022897. The reversal of 129454022880 is 88220454921.

129454022880 is a `hidden beast` number, since 1 + 2 + 9 + 4 + 540 + 2 + 28 + 80 = 666.

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 63 ways as a sum of consecutive naturals, for example, 228471 + ... + 557769.

It is an arithmetic number, because the mean of its divisors is an integer number (1452213000).

Almost surely, 2^129454022880 is an apocalyptic number.

129454022880 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 129454022880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278824896000).

129454022880 is an abundant number, since it is smaller than the sum of its proper divisors (428195769120).

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

129454022880 is a wasteful number, since it uses less digits than its factorization.

129454022880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329343 (or 329329 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 129454022880 in words is "one hundred twenty-nine billion, four hundred fifty-four million, twenty-two thousand, eight hundred eighty".