13309104162781 has 12 divisors (see below), whose sum is σ = 15900452079708. Its totient is φ = 11099484551232.

The previous prime is 13309104162751. The next prime is 13309104162793. The reversal of 13309104162781 is 18726140190331.

13309104162781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4672211940900 + 8636892221881 = 2161530^2 + 2938859^2 .

It is not a de Polignac number, because 13309104162781 - 2⁵ = 13309104162749 is a prime.

It is a super-2 number, since 2×13309104162781² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13309104162751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3670462656 + ... + 3670466281.

It is an arithmetic number, because the mean of its divisors is an integer number (1325037673309).

Almost surely, 2^{13309104162781} is an apocalyptic number.

It is an amenable number.

13309104162781 is a deficient number, since it is larger than the sum of its proper divisors (2591347916927).

13309104162781 is an equidigital number, since it uses as much as digits as its factorization.

13309104162781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340928988 (or 7340928981 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 13309104162781 in words is "thirteen trillion, three hundred nine billion, one hundred four million, one hundred sixty-two thousand, seven hundred eighty-one".