13220313277 has 2 divisors, whose sum is σ = 13220313278. Its totient is φ = 13220313276.

The previous prime is 13220313263. The next prime is 13220313319. The reversal of 13220313277 is 77231302231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11597351481 + 1622961796 = 107691^2 + 40286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13220313277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220313377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610156638 + 6610156639.

It is an arithmetic number, because the mean of its divisors is an integer number (6610156639).

Almost surely, 2^13220313277 is an apocalyptic number.

It is an amenable number.

13220313277 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220313277 is an equidigital number, since it uses as much as digits as its factorization.

13220313277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 31.

The spelling of 13220313277 in words is "thirteen billion, two hundred twenty million, three hundred thirteen thousand, two hundred seventy-seven".