129030516250 has 40 divisors (see below), whose sum is σ = 248391504900. Its totient is φ = 50217264000.

The previous prime is 129030516247. The next prime is 129030516271. The reversal of 129030516250 is 52615030921.

It can be written as a sum of positive squares in 10 ways, for example, as 14000332329 + 115030183921 = 118323^2 + 339161^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1348675 + ... + 1441174.

Almost surely, 2^129030516250 is an apocalyptic number.

129030516250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129030516250 is a deficient number, since it is larger than the sum of its proper divisors (119360988650).

129030516250 is an equidigital number, since it uses as much as digits as its factorization.

129030516250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789908 (or 2789893 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 129030516250 in words is "one hundred twenty-nine billion, thirty million, five hundred sixteen thousand, two hundred fifty".