20179145952018 has 48 divisors (see below), whose sum is σ = 44666049093120. Its totient is φ = 6581155915008.

The previous prime is 20179145952011. The next prime is 20179145952041. The reversal of 20179145952018 is 81025954197102.

20179145952018 is a `hidden beast` number, since 2 + 0 + 1 + 7 + 9 + 14 + 595 + 20 + 18 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20179145952011) 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, 1185055 + ... + 6462402.

It is an arithmetic number, because the mean of its divisors is an integer number (930542689440).

Almost surely, 2^{20179145952018} is an apocalyptic number.

20179145952018 is an abundant number, since it is smaller than the sum of its proper divisors (24486903141102).

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

20179145952018 is a wasteful number, since it uses less digits than its factorization.

20179145952018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650631 (or 7650628 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The spelling of 20179145952018 in words is "twenty trillion, one hundred seventy-nine billion, one hundred forty-five million, nine hundred fifty-two thousand, eighteen".