13998774772 has 6 divisors (see below), whose sum is σ = 24497855858. Its totient is φ = 6999387384.

The previous prime is 13998774703. The next prime is 13998774773. The reversal of 13998774772 is 27747789931.

It can be written as a sum of positive squares in only one way, i.e., 13746155536 + 252619236 = 117244^2 + 15894^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13998774773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1749846843 + ... + 1749846850.

Almost surely, 2^13998774772 is an apocalyptic number.

It is an amenable number.

13998774772 is a deficient number, since it is larger than the sum of its proper divisors (10499081086).

13998774772 is a wasteful number, since it uses less digits than its factorization.

13998774772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499693697 (or 3499693695 counting only the distinct ones).

The product of its digits is 37340352, while the sum is 64.

The spelling of 13998774772 in words is "thirteen billion, nine hundred ninety-eight million, seven hundred seventy-four thousand, seven hundred seventy-two".