129094418881 has 16 divisors (see below), whose sum is σ = 137845435840. Its totient is φ = 120541374720.

The previous prime is 129094418867. The next prime is 129094418911. The reversal of 129094418881 is 188814490921.

It is not a de Polignac number, because 129094418881 - 2¹³ = 129094410689 is a prime.

It is a super-2 number, since 2×129094418881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129094418081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2025541 + ... + 2088301.

It is an arithmetic number, because the mean of its divisors is an integer number (8615339740).

Almost surely, 2^129094418881 is an apocalyptic number.

It is an amenable number.

129094418881 is a deficient number, since it is larger than the sum of its proper divisors (8751016959).

129094418881 is a wasteful number, since it uses less digits than its factorization.

129094418881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64336.

The product of its (nonzero) digits is 1327104, while the sum is 55.

The spelling of 129094418881 in words is "one hundred twenty-nine billion, ninety-four million, four hundred eighteen thousand, eight hundred eighty-one".