129355159680 has 896 divisors, whose sum is σ = 502810778880. Its totient is φ = 31683280896.

The previous prime is 129355159657. The next prime is 129355159693. The reversal of 129355159680 is 86951553921.

129355159680 is a `hidden beast` number, since 1 + 2 + 9 + 3 + 551 + 5 + 9 + 6 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 372781267 + ... + 372781613.

Almost surely, 2^129355159680 is an apocalyptic number.

129355159680 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 129355159680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251405389440).

129355159680 is an abundant number, since it is smaller than the sum of its proper divisors (373455619200).

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

129355159680 is an equidigital number, since it uses as much as digits as its factorization.

129355159680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 54.

The spelling of 129355159680 in words is "one hundred twenty-nine billion, three hundred fifty-five million, one hundred fifty-nine thousand, six hundred eighty".