13885820779 has 16 divisors (see below), whose sum is σ = 14917259808. Its totient is φ = 12878548992.

The previous prime is 13885820771. The next prime is 13885820789. The reversal of 13885820779 is 97702858831.

It is a cyclic number.

It is not a de Polignac number, because 13885820779 - 2³ = 13885820771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13885820771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1605264 + ... + 1613890.

It is an arithmetic number, because the mean of its divisors is an integer number (932328738).

Almost surely, 2^13885820779 is an apocalyptic number.

13885820779 is a deficient number, since it is larger than the sum of its proper divisors (1031439029).

13885820779 is a wasteful number, since it uses less digits than its factorization.

13885820779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10014.

The product of its (nonzero) digits is 6773760, while the sum is 58.

The spelling of 13885820779 in words is "thirteen billion, eight hundred eighty-five million, eight hundred twenty thousand, seven hundred seventy-nine".