129200370044 has 48 divisors (see below), whose sum is σ = 241956664320. Its totient is φ = 60185980800.

The previous prime is 129200370037. The next prime is 129200370097. The reversal of 129200370044 is 440073002921.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 3069944 + ... + 3111744.

It is an arithmetic number, because the mean of its divisors is an integer number (5040763840).

Almost surely, 2^129200370044 is an apocalyptic number.

It is an amenable number.

129200370044 is a deficient number, since it is larger than the sum of its proper divisors (112756294276).

129200370044 is a wasteful number, since it uses less digits than its factorization.

129200370044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42498 (or 42496 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 129200370044 its reverse (440073002921), we get a palindrome (569273372965).

The spelling of 129200370044 in words is "one hundred twenty-nine billion, two hundred million, three hundred seventy thousand, forty-four".