129401650560 has 768 divisors, whose sum is σ = 532850088960. Its totient is φ = 26104725504.

The previous prime is 129401650541. The next prime is 129401650597. The reversal of 129401650560 is 65056104921.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 52240042 + ... + 52242518.

It is an arithmetic number, because the mean of its divisors is an integer number (693815220).

Almost surely, 2^129401650560 is an apocalyptic number.

129401650560 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 129401650560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266425044480).

129401650560 is an abundant number, since it is smaller than the sum of its proper divisors (403448438400).

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

129401650560 is a wasteful number, since it uses less digits than its factorization.

129401650560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555 (or 2530 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 129401650560 in words is "one hundred twenty-nine billion, four hundred one million, six hundred fifty thousand, five hundred sixty".