20146113621 has 48 divisors (see below), whose sum is σ = 30049522048. Its totient is φ = 13001472000.

The previous prime is 20146113599. The next prime is 20146113629. The reversal of 20146113621 is 12631164102.

It is a happy number.

20146113621 is a `hidden beast` number, since 2 + 0 + 14 + 611 + 36 + 2 + 1 = 666.

It is not a de Polignac number, because 20146113621 - 2⁶ = 20146113557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146113629) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8831001 + ... + 8833281.

Almost surely, 2^20146113621 is an apocalyptic number.

It is an amenable number.

20146113621 is a deficient number, since it is larger than the sum of its proper divisors (9903408427).

20146113621 is a wasteful number, since it uses less digits than its factorization.

20146113621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602 (or 2599 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 20146113621 its reverse (12631164102), we get a palindrome (32777277723).

The spelling of 20146113621 in words is "twenty billion, one hundred forty-six million, one hundred thirteen thousand, six hundred twenty-one".