129568500074 has 8 divisors (see below), whose sum is σ = 209302961700. Its totient is φ = 59800846176.

The previous prime is 129568500037. The next prime is 129568500091. The reversal of 129568500074 is 470005865921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 107916849049 + 21651651025 = 328507^2 + 147145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×129568500074² (a number of 23 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2491701899 + ... + 2491701950.

Almost surely, 2^129568500074 is an apocalyptic number.

129568500074 is a deficient number, since it is larger than the sum of its proper divisors (79734461626).

129568500074 is a wasteful number, since it uses less digits than its factorization.

129568500074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983403864.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 129568500074 in words is "one hundred twenty-nine billion, five hundred sixty-eight million, five hundred thousand, seventy-four".