129426315798 has 32 divisors (see below), whose sum is σ = 295162279776. Its totient is φ = 37480923648.

The previous prime is 129426315791. The next prime is 129426315817. The reversal of 129426315798 is 897513624921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129426315791) 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, 48801961 + ... + 48804612.

It is an arithmetic number, because the mean of its divisors is an integer number (9223821243).

Almost surely, 2^129426315798 is an apocalyptic number.

129426315798 is an abundant number, since it is smaller than the sum of its proper divisors (165735963978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129426315798 is a wasteful number, since it uses less digits than its factorization.

129426315798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97606608.

The product of its digits is 6531840, while the sum is 57.

The spelling of 129426315798 in words is "one hundred twenty-nine billion, four hundred twenty-six million, three hundred fifteen thousand, seven hundred ninety-eight".