129210137079 has 16 divisors (see below), whose sum is σ = 177165417312. Its totient is φ = 83703500928.

The previous prime is 129210137071. The next prime is 129210137123. The reversal of 129210137079 is 970731012921.

It is a happy number.

It is not a de Polignac number, because 129210137079 - 2³ = 129210137071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129210137079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129210137071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667144 + ... + 838749.

It is an arithmetic number, because the mean of its divisors is an integer number (11072838582).

Almost surely, 2^129210137079 is an apocalyptic number.

129210137079 is a deficient number, since it is larger than the sum of its proper divisors (47955280233).

129210137079 is a wasteful number, since it uses less digits than its factorization.

129210137079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506706.

The product of its (nonzero) digits is 47628, while the sum is 42.

The spelling of 129210137079 in words is "one hundred twenty-nine billion, two hundred ten million, one hundred thirty-seven thousand, seventy-nine".