20020166530 has 128 divisors (see below), whose sum is σ = 46860871680. Its totient is φ = 5987036160.

The previous prime is 20020166519. The next prime is 20020166531. The reversal of 20020166530 is 3566102002.

It is a junction number, because it is equal to n+sod(n) for n = 20020166495 and 20020166504.

It is not an unprimeable number, because it can be changed into a prime (20020166531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1232260 + ... + 1248400.

It is an arithmetic number, because the mean of its divisors is an integer number (366100560).

Almost surely, 2^20020166530 is an apocalyptic number.

20020166530 is an abundant number, since it is smaller than the sum of its proper divisors (26840705150).

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

20020166530 is a wasteful number, since it uses less digits than its factorization.

20020166530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16244.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 20020166530 its reverse (3566102002), we get a palindrome (23586268532).

The spelling of 20020166530 in words is "twenty billion, twenty million, one hundred sixty-six thousand, five hundred thirty".