64122318277 has 2 divisors, whose sum is σ = 64122318278. Its totient is φ = 64122318276.

The previous prime is 64122318257. The next prime is 64122318287. The reversal of 64122318277 is 77281322146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55256024356 + 8866293921 = 235066^2 + 94161^2 .

It is a cyclic number.

It is not a de Polignac number, because 64122318277 - 2⁷ = 64122318149 is a prime.

It is a super-2 number, since 2×64122318277² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64122318257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32061159138 + 32061159139.

It is an arithmetic number, because the mean of its divisors is an integer number (32061159139).

Almost surely, 2^64122318277 is an apocalyptic number.

It is an amenable number.

64122318277 is a deficient number, since it is larger than the sum of its proper divisors (1).

64122318277 is an equidigital number, since it uses as much as digits as its factorization.

64122318277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The spelling of 64122318277 in words is "sixty-four billion, one hundred twenty-two million, three hundred eighteen thousand, two hundred seventy-seven".