13220767773 has 12 divisors (see below), whose sum is σ = 19127825340. Its totient is φ = 8799463296.

The previous prime is 13220767741. The next prime is 13220767801. The reversal of 13220767773 is 37776702231.

It can be written as a sum of positive squares in 2 ways, for example, as 845762724 + 12375005049 = 29082^2 + 111243^2 .

It is not a de Polignac number, because 13220767773 - 2⁵ = 13220767741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220767673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1192668 + ... + 1203701.

It is an arithmetic number, because the mean of its divisors is an integer number (1593985445).

Almost surely, 2^13220767773 is an apocalyptic number.

It is an amenable number.

13220767773 is a deficient number, since it is larger than the sum of its proper divisors (5907057567).

13220767773 is a wasteful number, since it uses less digits than its factorization.

13220767773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396988 (or 2396985 counting only the distinct ones).

The product of its (nonzero) digits is 518616, while the sum is 45.

The spelling of 13220767773 in words is "thirteen billion, two hundred twenty million, seven hundred sixty-seven thousand, seven hundred seventy-three".