20122854377 has 2 divisors, whose sum is σ = 20122854378. Its totient is φ = 20122854376.

The previous prime is 20122854359. The next prime is 20122854403. The reversal of 20122854377 is 77345822102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12208261081 + 7914593296 = 110491^2 + 88964^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122854377 - 2¹⁰ = 20122853353 is a prime.

It is not a weakly prime, because it can be changed into another prime (20122854317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061427188 + 10061427189.

It is an arithmetic number, because the mean of its divisors is an integer number (10061427189).

Almost surely, 2^20122854377 is an apocalyptic number.

It is an amenable number.

20122854377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122854377 is an equidigital number, since it uses as much as digits as its factorization.

20122854377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 20122854377 in words is "twenty billion, one hundred twenty-two million, eight hundred fifty-four thousand, three hundred seventy-seven".