129854914560 has 480 divisors, whose sum is σ = 527711224320. Its totient is φ = 29677584384.

The previous prime is 129854914543. The next prime is 129854914621. The reversal of 129854914560 is 65419458921.

129854914560 is a `hidden beast` number, since 1 + 2 + 98 + 5 + 491 + 4 + 5 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 129854914497 and 129854914506.

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, 15478687 + ... + 15487073.

It is an arithmetic number, because the mean of its divisors is an integer number (1099398384).

Almost surely, 2^129854914560 is an apocalyptic number.

129854914560 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 129854914560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263855612160).

129854914560 is an abundant number, since it is smaller than the sum of its proper divisors (397856309760).

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

129854914560 is an frugal number, since it uses more digits than its factorization.

129854914560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8436 (or 8404 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 129854914560 in words is "one hundred twenty-nine billion, eight hundred fifty-four million, nine hundred fourteen thousand, five hundred sixty".