129452607819 has 12 divisors (see below), whose sum is σ = 195116974416. Its totient is φ = 82549488912.

The previous prime is 129452607803. The next prime is 129452607827. The reversal of 129452607819 is 918706254921.

It is a happy number.

129452607819 is a `hidden beast` number, since 1 + 29 + 4 + 5 + 2 + 607 + 8 + 1 + 9 = 666.

It is not a de Polignac number, because 129452607819 - 2⁴ = 129452607803 is a prime.

It is a super-2 number, since 2×129452607819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129452607419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312687252 + ... + 312687665.

It is an arithmetic number, because the mean of its divisors is an integer number (16259747868).

Almost surely, 2^129452607819 is an apocalyptic number.

129452607819 is a deficient number, since it is larger than the sum of its proper divisors (65664366597).

129452607819 is a wasteful number, since it uses less digits than its factorization.

129452607819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625374946 (or 625374943 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 129452607819 in words is "one hundred twenty-nine billion, four hundred fifty-two million, six hundred seven thousand, eight hundred nineteen".