13734874321 has 4 divisors (see below), whose sum is σ = 15696999232. Its totient is φ = 11772749412.

The previous prime is 13734874319. The next prime is 13734874381. The reversal of 13734874321 is 12347843731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12347843731 = 2903 ⋅4253477.

It is a cyclic number.

It is not a de Polignac number, because 13734874321 - 2¹ = 13734874319 is a prime.

It is a super-2 number, since 2×13734874321² (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 (13734874381) 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, 981062445 + ... + 981062458.

It is an arithmetic number, because the mean of its divisors is an integer number (3924249808).

Almost surely, 2^13734874321 is an apocalyptic number.

It is an amenable number.

13734874321 is a deficient number, since it is larger than the sum of its proper divisors (1962124911).

13734874321 is an equidigital number, since it uses as much as digits as its factorization.

13734874321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962124910.

The product of its digits is 338688, while the sum is 43.

The spelling of 13734874321 in words is "thirteen billion, seven hundred thirty-four million, eight hundred seventy-four thousand, three hundred twenty-one".