13717408779 has 16 divisors (see below), whose sum is σ = 20324574240. Its totient is φ = 9143820000.

The previous prime is 13717408769. The next prime is 13717408787. The reversal of 13717408779 is 97780471731.

It is a happy number.

It is not a de Polignac number, because 13717408779 - 2⁴ = 13717408763 is a prime.

It is a super-2 number, since 2×13717408779² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13717408769) 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, 235029 + ... + 287529.

It is an arithmetic number, because the mean of its divisors is an integer number (1270285890).

Almost surely, 2^13717408779 is an apocalyptic number.

13717408779 is a deficient number, since it is larger than the sum of its proper divisors (6607165461).

13717408779 is an equidigital number, since it uses as much as digits as its factorization.

13717408779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62187 (or 62181 counting only the distinct ones).

The product of its (nonzero) digits is 2074464, while the sum is 54.

The spelling of 13717408779 in words is "thirteen billion, seven hundred seventeen million, four hundred eight thousand, seven hundred seventy-nine".