13289343781 has 8 divisors (see below), whose sum is σ = 15208050944. Its totient is φ = 11375694000.

The previous prime is 13289343773. The next prime is 13289343787. The reversal of 13289343781 is 18734398231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13289343781 - 2³ = 13289343773 is a prime.

It is a super-2 number, since 2×13289343781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13289343787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1258710 + ... + 1269223.

It is an arithmetic number, because the mean of its divisors is an integer number (1901006368).

Almost surely, 2^13289343781 is an apocalyptic number.

It is an amenable number.

13289343781 is a deficient number, since it is larger than the sum of its proper divisors (1918707163).

13289343781 is an equidigital number, since it uses as much as digits as its factorization.

13289343781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528691.

The product of its digits is 870912, while the sum is 49.

The spelling of 13289343781 in words is "thirteen billion, two hundred eighty-nine million, three hundred forty-three thousand, seven hundred eighty-one".