129489451094 has 16 divisors (see below), whose sum is σ = 201438068400. Its totient is φ = 62354676384.

The previous prime is 129489451043. The next prime is 129489451097. The reversal of 129489451094 is 490154984921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129489451097) 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 7 ways as a sum of consecutive naturals, for example, 2788784 + ... + 2834835.

It is an arithmetic number, because the mean of its divisors is an integer number (12589879275).

Almost surely, 2^129489451094 is an apocalyptic number.

129489451094 is a deficient number, since it is larger than the sum of its proper divisors (71948617306).

129489451094 is a wasteful number, since it uses less digits than its factorization.

129489451094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5624047.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 129489451094 in words is "one hundred twenty-nine billion, four hundred eighty-nine million, four hundred fifty-one thousand, ninety-four".