129530865219 has 16 divisors (see below), whose sum is σ = 197521497600. Its totient is φ = 73964712960.

The previous prime is 129530865197. The next prime is 129530865253. The reversal of 129530865219 is 912568035921.

It is a happy number.

It is not a de Polignac number, because 129530865219 - 2⁸ = 129530864963 is a prime.

It is a super-2 number, since 2×129530865219² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129530865019) 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, 2175102 + ... + 2233859.

It is an arithmetic number, because the mean of its divisors is an integer number (12345093600).

Almost surely, 2^129530865219 is an apocalyptic number.

129530865219 is a deficient number, since it is larger than the sum of its proper divisors (67990632381).

129530865219 is a wasteful number, since it uses less digits than its factorization.

129530865219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410370.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 129530865219 in words is "one hundred twenty-nine billion, five hundred thirty million, eight hundred sixty-five thousand, two hundred nineteen".