129621298967 has 16 divisors (see below), whose sum is σ = 130754234880. Its totient is φ = 128494958592.

The previous prime is 129621298943. The next prime is 129621298979. The reversal of 129621298967 is 769892126921.

It is a cyclic number.

It is not a de Polignac number, because 129621298967 - 2⁶ = 129621298903 is a prime.

It is a super-2 number, since 2×129621298967² (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 (129621298997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52711784 + ... + 52714242.

It is an arithmetic number, because the mean of its divisors is an integer number (8172139680).

Almost surely, 2^129621298967 is an apocalyptic number.

129621298967 is a deficient number, since it is larger than the sum of its proper divisors (1132935913).

129621298967 is a wasteful number, since it uses less digits than its factorization.

129621298967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622.

The product of its digits is 11757312, while the sum is 62.

The spelling of 129621298967 in words is "one hundred twenty-nine billion, six hundred twenty-one million, two hundred ninety-eight thousand, nine hundred sixty-seven".