13773394448815 has 16 divisors (see below), whose sum is σ = 17286515967168. Its totient is φ = 10515299959296.

The previous prime is 13773394448791. The next prime is 13773394448839. The reversal of 13773394448815 is 51884449337731.

It is a happy number.

13773394448815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13773394448791) and next prime (13773394448839).

It is not a de Polignac number, because 13773394448815 - 2²³ = 13773386060207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138251184 + ... + 138350773.

It is an arithmetic number, because the mean of its divisors is an integer number (1080407247948).

Almost surely, 2^{13773394448815} is an apocalyptic number.

13773394448815 is a deficient number, since it is larger than the sum of its proper divisors (3513121518353).

13773394448815 is a wasteful number, since it uses less digits than its factorization.

13773394448815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276602418.

The product of its digits is 243855360, while the sum is 67.

The spelling of 13773394448815 in words is "thirteen trillion, seven hundred seventy-three billion, three hundred ninety-four million, four hundred forty-eight thousand, eight hundred fifteen".