20275012166 has 8 divisors (see below), whose sum is σ = 30927984840. Its totient is φ = 9965683888.

The previous prime is 20275012133. The next prime is 20275012169. The reversal of 20275012166 is 66121057202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20275012166² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20275012169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85910951 + ... + 85911186.

It is an arithmetic number, because the mean of its divisors is an integer number (3865998105).

Almost surely, 2^20275012166 is an apocalyptic number.

20275012166 is a deficient number, since it is larger than the sum of its proper divisors (10652972674).

20275012166 is a wasteful number, since it uses less digits than its factorization.

20275012166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171822198.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 20275012166 its reverse (66121057202), we get a palindrome (86396069368).

The spelling of 20275012166 in words is "twenty billion, two hundred seventy-five million, twelve thousand, one hundred sixty-six".