20620325166 has 16 divisors (see below), whose sum is σ = 47132171904. Its totient is φ = 5891521464.

The previous prime is 20620325161. The next prime is 20620325197. The reversal of 20620325166 is 66152302602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620325161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245480020 + ... + 245480103.

It is an arithmetic number, because the mean of its divisors is an integer number (2945760744).

Almost surely, 2^20620325166 is an apocalyptic number.

20620325166 is an abundant number, since it is smaller than the sum of its proper divisors (26511846738).

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

20620325166 is a wasteful number, since it uses less digits than its factorization.

20620325166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490960135.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 20620325166 its reverse (66152302602), we get a palindrome (86772627768).

The spelling of 20620325166 in words is "twenty billion, six hundred twenty million, three hundred twenty-five thousand, one hundred sixty-six".