129508722406 has 32 divisors (see below), whose sum is σ = 229770434880. Its totient is φ = 53566531200.

The previous prime is 129508722367. The next prime is 129508722419. The reversal of 129508722406 is 604227805921.

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, 882316 + ... + 1018576.

It is an arithmetic number, because the mean of its divisors is an integer number (7180326090).

Almost surely, 2^129508722406 is an apocalyptic number.

129508722406 is a deficient number, since it is larger than the sum of its proper divisors (100261712474).

129508722406 is a wasteful number, since it uses less digits than its factorization.

129508722406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138640.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 129508722406 in words is "one hundred twenty-nine billion, five hundred eight million, seven hundred twenty-two thousand, four hundred six".