20020054613 has 8 divisors (see below), whose sum is σ = 21573093528. Its totient is φ = 18468877824.

The previous prime is 20020054601. The next prime is 20020054633. The reversal of 20020054613 is 31645002002.

It can be written as a sum of positive squares in 4 ways, for example, as 21003889 + 19999050724 = 4583^2 + 141418^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20020054613 - 2⁴ = 20020054597 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 (20020054633) 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, 443156 + ... + 486237.

It is an arithmetic number, because the mean of its divisors is an integer number (2696636691).

Almost surely, 2^20020054613 is an apocalyptic number.

It is an amenable number.

20020054613 is a deficient number, since it is larger than the sum of its proper divisors (1553038915).

20020054613 is a wasteful number, since it uses less digits than its factorization.

20020054613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931063.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20020054613 its reverse (31645002002), we get a palindrome (51665056615).

The spelling of 20020054613 in words is "twenty billion, twenty million, fifty-four thousand, six hundred thirteen".