13455779276944 has 15 divisors (see below), whose sum is σ = 26070600777753. Its totient is φ = 6727882302048.

The previous prime is 13455779276941. The next prime is 13455779276959. The reversal of 13455779276944 is 44967297755431.

The square root of 13455779276944 is 3668212.

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

It can be written as a sum of positive squares in only one way, i.e., 6528944832400 + 6926834444544 = 2555180^2 + 2631888^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13455779276941) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14214322 + ... + 15131374.

Almost surely, 2^{13455779276944} is an apocalyptic number.

13455779276944 is the 3668212-nd square number.

It is an amenable number.

13455779276944 is a deficient number, since it is larger than the sum of its proper divisors (12614821500809).

13455779276944 is an frugal number, since it uses more digits than its factorization.

13455779276944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834114 (or 917055 counting only the distinct ones).

The product of its digits is 1600300800, while the sum is 73.

The spelling of 13455779276944 in words is "thirteen trillion, four hundred fifty-five billion, seven hundred seventy-nine million, two hundred seventy-six thousand, nine hundred forty-four".