13439550769 has 4 divisors (see below), whose sum is σ = 13507086400. Its totient is φ = 13372015140.

The previous prime is 13439550767. The next prime is 13439550797. The reversal of 13439550769 is 96705593431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13439550769 - 2¹ = 13439550767 is a prime.

It is a super-2 number, since 2×13439550769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13439550767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33767517 + ... + 33767914.

It is an arithmetic number, because the mean of its divisors is an integer number (3376771600).

Almost surely, 2^13439550769 is an apocalyptic number.

It is an amenable number.

13439550769 is a deficient number, since it is larger than the sum of its proper divisors (67535631).

13439550769 is an equidigital number, since it uses as much as digits as its factorization.

13439550769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67535630.

The product of its (nonzero) digits is 3061800, while the sum is 52.

The spelling of 13439550769 in words is "thirteen billion, four hundred thirty-nine million, five hundred fifty thousand, seven hundred sixty-nine".