13228760641 has 4 divisors (see below), whose sum is σ = 13244757552. Its totient is φ = 13212763732.

The previous prime is 13228760609. The next prime is 13228760687. The reversal of 13228760641 is 14606782231.

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 a cyclic number.

It is not a de Polignac number, because 13228760641 - 2⁵ = 13228760609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13228760594 and 13228760603.

It is not an unprimeable number, because it can be changed into a prime (13228764641) 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, 7997215 + ... + 7998868.

It is an arithmetic number, because the mean of its divisors is an integer number (3311189388).

Almost surely, 2^13228760641 is an apocalyptic number.

It is an amenable number.

13228760641 is a deficient number, since it is larger than the sum of its proper divisors (15996911).

13228760641 is an equidigital number, since it uses as much as digits as its factorization.

13228760641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15996910.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 13228760641 in words is "thirteen billion, two hundred twenty-eight million, seven hundred sixty thousand, six hundred forty-one".