20018518685370 has 48 divisors (see below), whose sum is σ = 53727121124352. Its totient is φ = 5166069337440.

The previous prime is 20018518685311. The next prime is 20018518685377. The reversal of 20018518685370 is 7358681581002.

20018518685370 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 8 + 518 + 6 + 8 + 53 + 70 = 666.

It is not an unprimeable number, because it can be changed into a prime (20018518685377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3587545362 + ... + 3587550941.

It is an arithmetic number, because the mean of its divisors is an integer number (1119315023424).

Almost surely, 2^{20018518685370} is an apocalyptic number.

20018518685370 is an abundant number, since it is smaller than the sum of its proper divisors (33708602438982).

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

20018518685370 is a wasteful number, since it uses less digits than its factorization.

20018518685370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7175096347 (or 7175096344 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 20018518685370 in words is "twenty trillion, eighteen billion, five hundred eighteen million, six hundred eighty-five thousand, three hundred seventy".