129875161720 has 32 divisors (see below), whose sum is σ = 295502482800. Its totient is φ = 51366354688.

The previous prime is 129875161651. The next prime is 129875161753. The reversal of 129875161720 is 27161578921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18237334 + ... + 18244453.

Almost surely, 2^129875161720 is an apocalyptic number.

129875161720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129875161720 is an abundant number, since it is smaller than the sum of its proper divisors (165627321080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129875161720 is a wasteful number, since it uses less digits than its factorization.

129875161720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36481887 (or 36481883 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 129875161720 in words is "one hundred twenty-nine billion, eight hundred seventy-five million, one hundred sixty-one thousand, seven hundred twenty".