18129649028120 has 64 divisors (see below), whose sum is σ = 47703262590720. Its totient is φ = 6071324321664.

The previous prime is 18129649028107. The next prime is 18129649028123. The reversal of 18129649028120 is 2182094692181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18129649028123) 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, 752880362 + ... + 752904441.

It is an arithmetic number, because the mean of its divisors is an integer number (745363477980).

Almost surely, 2^{18129649028120} is an apocalyptic number.

18129649028120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18129649028120 is an abundant number, since it is smaller than the sum of its proper divisors (29573613562600).

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

18129649028120 is a wasteful number, since it uses less digits than its factorization.

18129649028120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505784864 (or 1505784860 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 18129649028120 in words is "eighteen trillion, one hundred twenty-nine billion, six hundred forty-nine million, twenty-eight thousand, one hundred twenty".