20018182020 has 48 divisors (see below), whose sum is σ = 58487909760. Its totient is φ = 5106086656.

The previous prime is 20018182007. The next prime is 20018182027. The reversal of 20018182020 is 2028181002.

It is a super-2 number, since 2×20018182020² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20018182027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7251585 + ... + 7254344.

It is an arithmetic number, because the mean of its divisors is an integer number (1218498120).

Almost surely, 2^20018182020 is an apocalyptic number.

20018182020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20018182020 is an abundant number, since it is smaller than the sum of its proper divisors (38469727740).

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

20018182020 is a wasteful number, since it uses less digits than its factorization.

20018182020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14505964 (or 14505962 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 20018182020 in words is "twenty billion, eighteen million, one hundred eighty-two thousand, twenty".