13343640777 has 24 divisors (see below), whose sum is σ = 20632466400. Its totient is φ = 8284716288.

The previous prime is 13343640769. The next prime is 13343640781. The reversal of 13343640777 is 77704634331.

13343640777 is a `hidden beast` number, since 133 + 43 + 6 + 407 + 77 = 666.

It is not a de Polignac number, because 13343640777 - 2³ = 13343640769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13343640707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 651208 + ... + 671385.

It is an arithmetic number, because the mean of its divisors is an integer number (859686100).

Almost surely, 2^13343640777 is an apocalyptic number.

It is an amenable number.

13343640777 is a deficient number, since it is larger than the sum of its proper divisors (7288825623).

13343640777 is a wasteful number, since it uses less digits than its factorization.

13343640777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322677 (or 1322674 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 45.

The spelling of 13343640777 in words is "thirteen billion, three hundred forty-three million, six hundred forty thousand, seven hundred seventy-seven".