13752721441 has 4 divisors (see below), whose sum is σ = 13792354992. Its totient is φ = 13713087892.

The previous prime is 13752721439. The next prime is 13752721481. The reversal of 13752721441 is 14412725731.

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: 14412725731 = 32051 ⋅449681.

It is a cyclic number.

It is not a de Polignac number, because 13752721441 - 2¹ = 13752721439 is a prime.

It is a super-2 number, since 2×13752721441² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13752721441.

It is not an unprimeable number, because it can be changed into a prime (13752721481) 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, 19816255 + ... + 19816948.

It is an arithmetic number, because the mean of its divisors is an integer number (3448088748).

Almost surely, 2^13752721441 is an apocalyptic number.

It is an amenable number.

13752721441 is a deficient number, since it is larger than the sum of its proper divisors (39633551).

13752721441 is an equidigital number, since it uses as much as digits as its factorization.

13752721441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39633550.

The product of its digits is 47040, while the sum is 37.

The spelling of 13752721441 in words is "thirteen billion, seven hundred fifty-two million, seven hundred twenty-one thousand, four hundred forty-one".