13280228461 has 4 divisors (see below), whose sum is σ = 13281594624. Its totient is φ = 13278862300.

The previous prime is 13280228447. The next prime is 13280228473. The reversal of 13280228461 is 16482208231.

It is a happy number.

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: 16482208231 = 1609 ⋅10243759.

It is a cyclic number.

It is not a de Polignac number, because 13280228461 - 2²¹ = 13278131309 is a prime.

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 13280228461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280228431) 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, 668395 + ... + 687976.

It is an arithmetic number, because the mean of its divisors is an integer number (3320398656).

Almost surely, 2^13280228461 is an apocalyptic number.

It is an amenable number.

13280228461 is a deficient number, since it is larger than the sum of its proper divisors (1366163).

13280228461 is an equidigital number, since it uses as much as digits as its factorization.

13280228461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366162.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 13280228461 in words is "thirteen billion, two hundred eighty million, two hundred twenty-eight thousand, four hundred sixty-one".