129536540328 has 64 divisors (see below), whose sum is σ = 349751808000. Its totient is φ = 39743159040.

The previous prime is 129536540321. The next prime is 129536540363. The reversal of 129536540328 is 823045635921.

It is not an unprimeable number, because it can be changed into a prime (129536540321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485928 + ... + 703703.

It is an arithmetic number, because the mean of its divisors is an integer number (5464872000).

Almost surely, 2^129536540328 is an apocalyptic number.

It is an amenable number.

129536540328 is an abundant number, since it is smaller than the sum of its proper divisors (220215267672).

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

129536540328 is a wasteful number, since it uses less digits than its factorization.

129536540328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190002 (or 1189998 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 129536540328 in words is "one hundred twenty-nine billion, five hundred thirty-six million, five hundred forty thousand, three hundred twenty-eight".