129353540320 has 24 divisors (see below), whose sum is σ = 305597739384. Its totient is φ = 51741416064.

The previous prime is 129353540317. The next prime is 129353540353. The reversal of 129353540320 is 23045353921.

It is a self number, because there is not a number n which added to its sum of digits gives 129353540320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404229654 + ... + 404229973.

It is an arithmetic number, because the mean of its divisors is an integer number (12733239141).

Almost surely, 2^129353540320 is an apocalyptic number.

129353540320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129353540320 is an abundant number, since it is smaller than the sum of its proper divisors (176244199064).

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

129353540320 is an equidigital number, since it uses as much as digits as its factorization.

129353540320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808459642 (or 808459634 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 37.

The spelling of 129353540320 in words is "one hundred twenty-nine billion, three hundred fifty-three million, five hundred forty thousand, three hundred twenty".