129967193081851 has 2 divisors, whose sum is σ = 129967193081852. Its totient is φ = 129967193081850.

The previous prime is 129967193081839. The next prime is 129967193081863. The reversal of 129967193081851 is 158180391769921.

It is a balanced prime because it is at equal distance from previous prime (129967193081839) and next prime (129967193081863).

It is a cyclic number.

It is not a de Polignac number, because 129967193081851 - 2⁷ = 129967193081723 is a prime.

It is not a weakly prime, because it can be changed into another prime (129967193084851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64983596540925 + 64983596540926.

It is an arithmetic number, because the mean of its divisors is an integer number (64983596540926).

Almost surely, 2^{129967193081851} is an apocalyptic number.

129967193081851 is a deficient number, since it is larger than the sum of its proper divisors (1).

129967193081851 is an equidigital number, since it uses as much as digits as its factorization.

129967193081851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58786560, while the sum is 70.

The spelling of 129967193081851 in words is "one hundred twenty-nine trillion, nine hundred sixty-seven billion, one hundred ninety-three million, eighty-one thousand, eight hundred fifty-one".