129797163008 has 108 divisors (see below), whose sum is σ = 274564676295. Its totient is φ = 61336129536.

The previous prime is 129797162987. The next prime is 129797163019. The reversal of 129797163008 is 800361797921.

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 only one way, i.e., 64898581504 + 64898581504 = 254752^2 + 254752^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=254752.

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, 309778223 + ... + 309778641.

Almost surely, 2^129797163008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129797163008

129797163008 is an abundant number, since it is smaller than the sum of its proper divisors (144767513287).

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

129797163008 is an frugal number, since it uses more digits than its factorization.

129797163008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 129797163008 in words is "one hundred twenty-nine billion, seven hundred ninety-seven million, one hundred sixty-three thousand, eight".