129500561575 has 54 divisors (see below), whose sum is σ = 201802807752. Its totient is φ = 80694979200.

The previous prime is 129500561557. The next prime is 129500561587. The reversal of 129500561575 is 575165005921.

It is not a de Polignac number, because 129500561575 - 2⁵ = 129500561543 is a prime.

It is a congruent number.

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 53 ways as a sum of consecutive naturals, for example, 52364539 + ... + 52367011.

Almost surely, 2^129500561575 is an apocalyptic number.

129500561575 is a deficient number, since it is larger than the sum of its proper divisors (72302246177).

129500561575 is an frugal number, since it uses more digits than its factorization.

129500561575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4985 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 472500, while the sum is 46.

The spelling of 129500561575 in words is "one hundred twenty-nine billion, five hundred million, five hundred sixty-one thousand, five hundred seventy-five".