129540574685 has 16 divisors (see below), whose sum is σ = 164667681216. Its totient is φ = 97492017408.

The previous prime is 129540574679. The next prime is 129540574687. The reversal of 129540574685 is 586475045921.

It is a cyclic number.

It is not a de Polignac number, because 129540574685 - 2¹⁶ = 129540509149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129540574685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129540574687) 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, 158639 + ... + 533148.

It is an arithmetic number, because the mean of its divisors is an integer number (10291730076).

Almost surely, 2^129540574685 is an apocalyptic number.

It is an amenable number.

129540574685 is a deficient number, since it is larger than the sum of its proper divisors (35127106531).

129540574685 is a wasteful number, since it uses less digits than its factorization.

129540574685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694012.

The product of its (nonzero) digits is 12096000, while the sum is 56.

The spelling of 129540574685 in words is "one hundred twenty-nine billion, five hundred forty million, five hundred seventy-four thousand, six hundred eighty-five".