129718254898 has 32 divisors (see below), whose sum is σ = 205838340480. Its totient is φ = 61186815360.

The previous prime is 129718254893. The next prime is 129718254901. The reversal of 129718254898 is 898452817921.

It is not an unprimeable number, because it can be changed into a prime (129718254893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1585413 + ... + 1665223.

It is an arithmetic number, because the mean of its divisors is an integer number (6432448140).

Almost surely, 2^129718254898 is an apocalyptic number.

129718254898 is a deficient number, since it is larger than the sum of its proper divisors (76120085582).

129718254898 is a wasteful number, since it uses less digits than its factorization.

129718254898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80322.

The product of its digits is 23224320, while the sum is 64.

The spelling of 129718254898 in words is "one hundred twenty-nine billion, seven hundred eighteen million, two hundred fifty-four thousand, eight hundred ninety-eight".