129745264739 has 16 divisors (see below), whose sum is σ = 132944716800. Its totient is φ = 126575600736.

The previous prime is 129745264651. The next prime is 129745264771. The reversal of 129745264739 is 937462547921.

It is a cyclic number.

It is not a de Polignac number, because 129745264739 - 2⁸ = 129745264483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129745264799) by changing a digit.

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, 7175492 + ... + 7193550.

It is an arithmetic number, because the mean of its divisors is an integer number (8309044800).

Almost surely, 2^129745264739 is an apocalyptic number.

129745264739 is a deficient number, since it is larger than the sum of its proper divisors (3199452061).

129745264739 is a wasteful number, since it uses less digits than its factorization.

129745264739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18874.

The product of its digits is 22861440, while the sum is 59.

The spelling of 129745264739 in words is "one hundred twenty-nine billion, seven hundred forty-five million, two hundred sixty-four thousand, seven hundred thirty-nine".