20002200077 has 2 divisors, whose sum is σ = 20002200078. Its totient is φ = 20002200076.

The previous prime is 20002200067. The next prime is 20002200149. The reversal of 20002200077 is 77000220002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12911549641 + 7090650436 = 113629^2 + 84206^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002200077 - 2⁶ = 20002200013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002200007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001100038 + 10001100039.

It is an arithmetic number, because the mean of its divisors is an integer number (10001100039).

Almost surely, 2^20002200077 is an apocalyptic number.

It is an amenable number.

20002200077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002200077 is an equidigital number, since it uses as much as digits as its factorization.

20002200077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 20.

Adding to 20002200077 its reverse (77000220002), we get a palindrome (97002420079).

The spelling of 20002200077 in words is "twenty billion, two million, two hundred thousand, seventy-seven".