654944222077 has 2 divisors, whose sum is σ = 654944222078. Its totient is φ = 654944222076.

The previous prime is 654944222057. The next prime is 654944222111. The reversal of 654944222077 is 770222449456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492318335716 + 162625886361 = 701654^2 + 403269^2 .

It is a cyclic number.

It is not a de Polignac number, because 654944222077 - 2¹⁵ = 654944189309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654944222057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327472111038 + 327472111039.

It is an arithmetic number, because the mean of its divisors is an integer number (327472111039).

Almost surely, 2^654944222077 is an apocalyptic number.

It is an amenable number.

654944222077 is a deficient number, since it is larger than the sum of its proper divisors (1).

654944222077 is an equidigital number, since it uses as much as digits as its factorization.

654944222077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 52.

The spelling of 654944222077 in words is "six hundred fifty-four billion, nine hundred forty-four million, two hundred twenty-two thousand, seventy-seven".