18275353561522 has 4 divisors (see below), whose sum is σ = 27413030342286. Its totient is φ = 9137676780760.

The previous prime is 18275353561481. The next prime is 18275353561541. The reversal of 18275353561522 is 22516535357281.

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

It can be written as a sum of positive squares in only one way, i.e., 12549100785841 + 5726252775681 = 3542471^2 + 2392959^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4568838390379 + ... + 4568838390382.

Almost surely, 2^{18275353561522} is an apocalyptic number.

18275353561522 is a deficient number, since it is larger than the sum of its proper divisors (9137676780764).

18275353561522 is an equidigital number, since it uses as much as digits as its factorization.

18275353561522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9137676780763.

The product of its digits is 15120000, while the sum is 55.

The spelling of 18275353561522 in words is "eighteen trillion, two hundred seventy-five billion, three hundred fifty-three million, five hundred sixty-one thousand, five hundred twenty-two".