18160121342120 has 16 divisors (see below), whose sum is σ = 40860273019860. Its totient is φ = 7264048536832.

The previous prime is 18160121342119. The next prime is 18160121342123. The reversal of 18160121342120 is 2124312106181.

It can be written as a sum of positive squares in 2 ways, for example, as 16722390847204 + 1437730494916 = 4089302^2 + 1199054^2 .

It is not an unprimeable number, because it can be changed into a prime (18160121342123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227001516737 + ... + 227001516816.

Almost surely, 2^{18160121342120} is an apocalyptic number.

18160121342120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18160121342120 is an abundant number, since it is smaller than the sum of its proper divisors (22700151677740).

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

18160121342120 is a wasteful number, since it uses less digits than its factorization.

18160121342120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454003033564 (or 454003033560 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 18160121342120 in words is "eighteen trillion, one hundred sixty billion, one hundred twenty-one million, three hundred forty-two thousand, one hundred twenty".