129681022088 has 36 divisors (see below), whose sum is σ = 256661238645. Its totient is φ = 61418685600.

The previous prime is 129681022067. The next prime is 129681022091. The reversal of 129681022088 is 880220186921.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 128434790884 + 1246231204 = 358378^2 + 35302^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=254638.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19349138 + ... + 19355838.

Almost surely, 2^129681022088 is an apocalyptic number.

It is an amenable number.

129681022088 is a deficient number, since it is larger than the sum of its proper divisors (126980216557).

129681022088 is an frugal number, since it uses more digits than its factorization.

129681022088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13446 (or 6722 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 47.

The spelling of 129681022088 in words is "one hundred twenty-nine billion, six hundred eighty-one million, twenty-two thousand, eighty-eight".