129867161830 has 64 divisors (see below), whose sum is σ = 268085283840. Its totient is φ = 44371152000.

The previous prime is 129867161819. The next prime is 129867161861. The reversal of 129867161830 is 38161768921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32295220 + ... + 32299240.

It is an arithmetic number, because the mean of its divisors is an integer number (4188832560).

Almost surely, 2^129867161830 is an apocalyptic number.

129867161830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129867161830 is an abundant number, since it is smaller than the sum of its proper divisors (138218122010).

129867161830 is a wasteful number, since it uses less digits than its factorization.

129867161830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 129867161830 in words is "one hundred twenty-nine billion, eight hundred sixty-seven million, one hundred sixty-one thousand, eight hundred thirty".