8163520253618 has 8 divisors (see below), whose sum is σ = 12245338432512. Its totient is φ = 4081740776116.

The previous prime is 8163520253611. The next prime is 8163520253621.

8163520253618 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8163520253611) 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, 9142130 + ... + 9995277.

It is an arithmetic number, because the mean of its divisors is an integer number (1530667304064).

Almost surely, 2^{8163520253618} is an apocalyptic number.

8163520253618 is a deficient number, since it is larger than the sum of its proper divisors (4081818178894).

8163520253618 is a wasteful number, since it uses less digits than its factorization.

8163520253618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19350696.

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 8163520253618 in words is "eight trillion, one hundred sixty-three billion, five hundred twenty million, two hundred fifty-three thousand, six hundred eighteen".