18540275126353 has 4 divisors (see below), whose sum is σ = 18540316943460. Its totient is φ = 18540233309248.

The previous prime is 18540275126341. The next prime is 18540275126357. The reversal of 18540275126353 is 35362157204581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4091282926864 + 14448992199489 = 2022692^2 + 3801183^2 .

It is a cyclic number.

It is not a de Polignac number, because 18540275126353 - 2³⁷ = 18402836172881 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 18540275126353.

It is not an unprimeable number, because it can be changed into a prime (18540275126357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20236300 + ... + 21132637.

It is an arithmetic number, because the mean of its divisors is an integer number (4635079235865).

Almost surely, 2^{18540275126353} is an apocalyptic number.

It is an amenable number.

18540275126353 is a deficient number, since it is larger than the sum of its proper divisors (41817107).

18540275126353 is an equidigital number, since it uses as much as digits as its factorization.

18540275126353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41817106.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 18540275126353 in words is "eighteen trillion, five hundred forty billion, two hundred seventy-five million, one hundred twenty-six thousand, three hundred fifty-three".