129174242645 has 16 divisors (see below), whose sum is σ = 177455069568. Its totient is φ = 88425712320.

The previous prime is 129174242611. The next prime is 129174242677. The reversal of 129174242645 is 546242471921.

It is not a de Polignac number, because 129174242645 - 2¹² = 129174238549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129174242645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3123146 + ... + 3164235.

It is an arithmetic number, because the mean of its divisors is an integer number (11090941848).

Almost surely, 2^129174242645 is an apocalyptic number.

It is an amenable number.

129174242645 is a deficient number, since it is larger than the sum of its proper divisors (48280826923).

129174242645 is an equidigital number, since it uses as much as digits as its factorization.

129174242645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287980.

The product of its digits is 967680, while the sum is 47.

The spelling of 129174242645 in words is "one hundred twenty-nine billion, one hundred seventy-four million, two hundred forty-two thousand, six hundred forty-five".