129117159469 has 4 divisors (see below), whose sum is σ = 130133830144. Its totient is φ = 128100488796.

The previous prime is 129117159439. The next prime is 129117159497. The reversal of 129117159469 is 964951711921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129117159469 - 2²¹ = 129115062317 is a prime.

It is a super-2 number, since 2×129117159469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129117159439) 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, 508335147 + ... + 508335400.

It is an arithmetic number, because the mean of its divisors is an integer number (32533457536).

Almost surely, 2^129117159469 is an apocalyptic number.

It is an amenable number.

129117159469 is a deficient number, since it is larger than the sum of its proper divisors (1016670675).

129117159469 is a wasteful number, since it uses less digits than its factorization.

129117159469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016670674.

The product of its digits is 1224720, while the sum is 55.

The spelling of 129117159469 in words is "one hundred twenty-nine billion, one hundred seventeen million, one hundred fifty-nine thousand, four hundred sixty-nine".