129564819417 has 16 divisors (see below), whose sum is σ = 189813738240. Its totient is φ = 77959208400.

The previous prime is 129564819407. The next prime is 129564819421. The reversal of 129564819417 is 714918465921.

It is not a de Polignac number, because 129564819417 - 2⁴ = 129564819401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129564819407) 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, 14118459 + ... + 14127632.

It is an arithmetic number, because the mean of its divisors is an integer number (11863358640).

Almost surely, 2^129564819417 is an apocalyptic number.

It is an amenable number.

129564819417 is a deficient number, since it is larger than the sum of its proper divisors (60248918823).

129564819417 is a wasteful number, since it uses less digits than its factorization.

129564819417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28246244.

The product of its digits is 4354560, while the sum is 57.

The spelling of 129564819417 in words is "one hundred twenty-nine billion, five hundred sixty-four million, eight hundred nineteen thousand, four hundred seventeen".