13774228641 has 6 divisors (see below), whose sum is σ = 19896108050. Its totient is φ = 9182819088.

The previous prime is 13774228621. The next prime is 13774228651. The reversal of 13774228641 is 14682247731.

It can be written as a sum of positive squares in only one way, i.e., 13206836241 + 567392400 = 114921^2 + 23820^2 .

It is not a de Polignac number, because 13774228641 - 2²² = 13770034337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13774228621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 765234916 + ... + 765234933.

Almost surely, 2^13774228641 is an apocalyptic number.

It is an amenable number.

13774228641 is a deficient number, since it is larger than the sum of its proper divisors (6121879409).

13774228641 is a wasteful number, since it uses less digits than its factorization.

13774228641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530469855 (or 1530469852 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The spelling of 13774228641 in words is "thirteen billion, seven hundred seventy-four million, two hundred twenty-eight thousand, six hundred forty-one".