129964145943 has 8 divisors (see below), whose sum is σ = 180819681408. Its totient is φ = 82875687224.

The previous prime is 129964145939. The next prime is 129964145977. The reversal of 129964145943 is 349541469921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129964145943 - 2² = 129964145939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129964145923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941769105 + ... + 941769242.

It is an arithmetic number, because the mean of its divisors is an integer number (22602460176).

Almost surely, 2^129964145943 is an apocalyptic number.

129964145943 is a deficient number, since it is larger than the sum of its proper divisors (50855535465).

129964145943 is a wasteful number, since it uses less digits than its factorization.

129964145943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883538373.

The product of its digits is 8398080, while the sum is 57.

The spelling of 129964145943 in words is "one hundred twenty-nine billion, nine hundred sixty-four million, one hundred forty-five thousand, nine hundred forty-three".