13771961316 has 27 divisors (see below), whose sum is σ = 34814237731. Its totient is φ = 4590419064.

The previous prime is 13771961299. The next prime is 13771961317. The reversal of 13771961316 is 61316917731.

The square root of 13771961316 is 117354.

It is a perfect power (a square), and thus also a powerful number.

13771961316 is a `hidden beast` number, since 1 + 3 + 7 + 7 + 19 + 613 + 16 = 666.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13771961317) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 694345 + ... + 713903.

Almost surely, 2^13771961316 is an apocalyptic number.

13771961316 is the 117354-th square number.

It is an amenable number.

13771961316 is an abundant number, since it is smaller than the sum of its proper divisors (21042276415).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13771961316 is an frugal number, since it uses more digits than its factorization.

13771961316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39128 (or 19564 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The spelling of 13771961316 in words is "thirteen billion, seven hundred seventy-one million, nine hundred sixty-one thousand, three hundred sixteen".