129954756187 has 2 divisors, whose sum is σ = 129954756188. Its totient is φ = 129954756186.

The previous prime is 129954756131. The next prime is 129954756199. The reversal of 129954756187 is 781657459921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129954756187 is a prime.

It is a super-2 number, since 2×129954756187² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129954756287) by changing a digit.

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 as a sum of consecutive naturals, namely, 64977378093 + 64977378094.

It is an arithmetic number, because the mean of its divisors is an integer number (64977378094).

Almost surely, 2^129954756187 is an apocalyptic number.

129954756187 is a deficient number, since it is larger than the sum of its proper divisors (1).

129954756187 is an equidigital number, since it uses as much as digits as its factorization.

129954756187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38102400, while the sum is 64.

The spelling of 129954756187 in words is "one hundred twenty-nine billion, nine hundred fifty-four million, seven hundred fifty-six thousand, one hundred eighty-seven".