20794250061 has 12 divisors (see below), whose sum is σ = 32346611388. Its totient is φ = 12796461504.

The previous prime is 20794250053. The next prime is 20794250063. The reversal of 20794250061 is 16005249702.

20794250061 is a `hidden beast` number, since 2 + 0 + 7 + 94 + 2 + 500 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6024709161 + 14769540900 = 77619^2 + 121530^2 .

It is not a de Polignac number, because 20794250061 - 2³ = 20794250053 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20794249998 and 20794250025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20794250063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88864200 + ... + 88864433.

It is an arithmetic number, because the mean of its divisors is an integer number (2695550949).

Almost surely, 2^20794250061 is an apocalyptic number.

It is an amenable number.

20794250061 is a deficient number, since it is larger than the sum of its proper divisors (11552361327).

20794250061 is a wasteful number, since it uses less digits than its factorization.

20794250061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177728652 (or 177728649 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

Adding to 20794250061 its reverse (16005249702), we get a palindrome (36799499763).

The spelling of 20794250061 in words is "twenty billion, seven hundred ninety-four million, two hundred fifty thousand, sixty-one".