13270645749 has 4 divisors (see below), whose sum is σ = 17694194336. Its totient is φ = 8847097164.

The previous prime is 13270645747. The next prime is 13270645771. The reversal of 13270645749 is 94754607231.

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 not a de Polignac number, because 13270645749 - 2¹ = 13270645747 is a prime.

It is a super-2 number, since 2×13270645749² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13270645698 and 13270645707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13270645747) 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, 2211774289 + ... + 2211774294.

It is an arithmetic number, because the mean of its divisors is an integer number (4423548584).

Almost surely, 2^13270645749 is an apocalyptic number.

It is an amenable number.

13270645749 is a deficient number, since it is larger than the sum of its proper divisors (4423548587).

13270645749 is an equidigital number, since it uses as much as digits as its factorization.

13270645749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423548586.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 13270645749 in words is "thirteen billion, two hundred seventy million, six hundred forty-five thousand, seven hundred forty-nine".