129801742272 has 56 divisors (see below), whose sum is σ = 381593090000. Its totient is φ = 43267246848.

The previous prime is 129801742271. The next prime is 129801742283. The reversal of 129801742272 is 272247108921.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129801742271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37556647 + ... + 37560102.

Almost surely, 2^129801742272 is an apocalyptic number.

129801742272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129801742272 is an abundant number, since it is smaller than the sum of its proper divisors (251791347728).

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

129801742272 is an equidigital number, since it uses as much as digits as its factorization.

129801742272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75116770 (or 75116754 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 129801742272 in words is "one hundred twenty-nine billion, eight hundred one million, seven hundred forty-two thousand, two hundred seventy-two".