129082952047 has 4 divisors (see below), whose sum is σ = 147523373776. Its totient is φ = 110642530320.

The previous prime is 129082952029. The next prime is 129082952057. The reversal of 129082952047 is 740259280921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740259280921 = 23 ⋅32185186127.

It is not a de Polignac number, because 129082952047 - 2⁷ = 129082951919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129082952027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9220210854 + ... + 9220210867.

It is an arithmetic number, because the mean of its divisors is an integer number (36880843444).

Almost surely, 2^129082952047 is an apocalyptic number.

129082952047 is a deficient number, since it is larger than the sum of its proper divisors (18440421729).

129082952047 is an equidigital number, since it uses as much as digits as its factorization.

129082952047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18440421728.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 129082952047 in words is "one hundred twenty-nine billion, eighty-two million, nine hundred fifty-two thousand, forty-seven".