20018214920 has 64 divisors (see below), whose sum is σ = 49151802240. Its totient is φ = 7276953600.

The previous prime is 20018214913. The next prime is 20018214943. The reversal of 20018214920 is 2941281002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1856264 + ... + 1867016.

It is an arithmetic number, because the mean of its divisors is an integer number (767996910).

Almost surely, 2^20018214920 is an apocalyptic number.

20018214920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20018214920 is an abundant number, since it is smaller than the sum of its proper divisors (29133587320).

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

20018214920 is a wasteful number, since it uses less digits than its factorization.

20018214920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15006 (or 15002 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

Adding to 20018214920 its reverse (2941281002), we get a palindrome (22959495922).

The spelling of 20018214920 in words is "twenty billion, eighteen million, two hundred fourteen thousand, nine hundred twenty".