20310121663164 has 18 divisors (see below), whose sum is σ = 51339474204200. Its totient is φ = 6770040554376.

The previous prime is 20310121663147. The next prime is 20310121663207. The reversal of 20310121663164 is 46136612101302.

20310121663164 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 0 + 1 + 2 + 16 + 631 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 564170046199 = 20310121663164 / (2 + 0 + 3 + 1 + 0 + 1 + 2 + 1 + 6 + 6 + 3 + 1 + 6 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282085023064 + ... + 282085023135.

Almost surely, 2^{20310121663164} is an apocalyptic number.

It is an amenable number.

20310121663164 is an abundant number, since it is smaller than the sum of its proper divisors (31029352541036).

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

20310121663164 is a wasteful number, since it uses less digits than its factorization.

20310121663164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564170046209 (or 564170046204 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 20310121663164 its reverse (46136612101302), we get a palindrome (66446733764466).

The spelling of 20310121663164 in words is "twenty trillion, three hundred ten billion, one hundred twenty-one million, six hundred sixty-three thousand, one hundred sixty-four".