129273603674240 has 128 divisors (see below), whose sum is σ = 315691219609920. Its totient is φ = 50608990597120.

The previous prime is 129273603674213. The next prime is 129273603674251. The reversal of 129273603674240 is 42476306372921.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5688191 + ... + 17055870.

Almost surely, 2^{129273603674240} is an apocalyptic number.

129273603674240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129273603674240 is an abundant number, since it is smaller than the sum of its proper divisors (186417615935680).

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

129273603674240 is a wasteful number, since it uses less digits than its factorization.

129273603674240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22744270 (or 22744258 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 56.

The spelling of 129273603674240 in words is "one hundred twenty-nine trillion, two hundred seventy-three billion, six hundred three million, six hundred seventy-four thousand, two hundred forty".