129500187958 has 16 divisors (see below), whose sum is σ = 200525406336. Its totient is φ = 62658573120.

The previous prime is 129500187907. The next prime is 129500187977. The reversal of 129500187958 is 859781005921.

It is a junction number, because it is equal to n+sod(n) for n = 129500187899 and 129500187908.

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 7 ways as a sum of consecutive naturals, for example, 2247760 + ... + 2304652.

It is an arithmetic number, because the mean of its divisors is an integer number (12532837896).

Almost surely, 2^129500187958 is an apocalyptic number.

129500187958 is a deficient number, since it is larger than the sum of its proper divisors (71025218378).

129500187958 is a wasteful number, since it uses less digits than its factorization.

129500187958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93639.

The product of its (nonzero) digits is 1814400, while the sum is 55.

The spelling of 129500187958 in words is "one hundred twenty-nine billion, five hundred million, one hundred eighty-seven thousand, nine hundred fifty-eight".