516141720018 has 12 divisors (see below), whose sum is σ = 1118307060078. Its totient is φ = 172047240000.

The previous prime is 516141720013. The next prime is 516141720043. The reversal of 516141720018 is 810027141615.

516141720018 is a `hidden beast` number, since 5 + 1 + 614 + 1 + 7 + 20 + 0 + 18 = 666.

It can be written as a sum of positive squares in only one way, i.e., 515298572649 + 843147369 = 717843^2 + 29037^2 .

It is not an unprimeable number, because it can be changed into a prime (516141720011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14337269983 + ... + 14337270018.

Almost surely, 2^516141720018 is an apocalyptic number.

516141720018 is an abundant number, since it is smaller than the sum of its proper divisors (602165340060).

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

516141720018 is a wasteful number, since it uses less digits than its factorization.

516141720018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28674540009 (or 28674540006 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The spelling of 516141720018 in words is "five hundred sixteen billion, one hundred forty-one million, seven hundred twenty thousand, eighteen".