13846778121775 has 12 divisors (see below), whose sum is σ = 17330472209592. Its totient is φ = 10973895182240.

The previous prime is 13846778121749. The next prime is 13846778121791. The reversal of 13846778121775 is 57712187764831.

It is not a de Polignac number, because 13846778121775 - 2¹⁹ = 13846777597487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13846778121775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2588180152 + ... + 2588185501.

It is an arithmetic number, because the mean of its divisors is an integer number (1444206017466).

Almost surely, 2^{13846778121775} is an apocalyptic number.

13846778121775 is a deficient number, since it is larger than the sum of its proper divisors (3483694087817).

13846778121775 is a wasteful number, since it uses less digits than its factorization.

13846778121775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176365770 (or 5176365765 counting only the distinct ones).

The product of its digits is 110638080, while the sum is 67.

The spelling of 13846778121775 in words is "thirteen trillion, eight hundred forty-six billion, seven hundred seventy-eight million, one hundred twenty-one thousand, seven hundred seventy-five".