13818763270645 has 16 divisors (see below), whose sum is σ = 17889240270960. Its totient is φ = 10208400477184.

The previous prime is 13818763270591. The next prime is 13818763270657. The reversal of 13818763270645 is 54607236781831.

It can be written as a sum of positive squares in 8 ways, for example, as 1676667599044 + 12142095671601 = 1294862^2 + 3484551^2 .

It is a cyclic number.

It is not a de Polignac number, because 13818763270645 - 2³⁷ = 13681324317173 is a prime.

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, 1533709510 + ... + 1533718519.

It is an arithmetic number, because the mean of its divisors is an integer number (1118077516935).

Almost surely, 2^{13818763270645} is an apocalyptic number.

It is an amenable number.

13818763270645 is a deficient number, since it is larger than the sum of its proper divisors (4070477000315).

13818763270645 is a wasteful number, since it uses less digits than its factorization.

13818763270645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067428104.

The product of its (nonzero) digits is 40642560, while the sum is 61.

The spelling of 13818763270645 in words is "thirteen trillion, eight hundred eighteen billion, seven hundred sixty-three million, two hundred seventy thousand, six hundred forty-five".