129191523964 has 12 divisors (see below), whose sum is σ = 226141337464. Its totient is φ = 64579713264.

The previous prime is 129191523947. The next prime is 129191523977. The reversal of 129191523964 is 469325191921.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3994059 + ... + 4026274.

Almost surely, 2^129191523964 is an apocalyptic number.

It is an amenable number.

129191523964 is a deficient number, since it is larger than the sum of its proper divisors (96949813500).

129191523964 is a wasteful number, since it uses less digits than its factorization.

129191523964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8024364 (or 8024362 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 52.

The spelling of 129191523964 in words is "one hundred twenty-nine billion, one hundred ninety-one million, five hundred twenty-three thousand, nine hundred sixty-four".