20453153641166 has 4 divisors (see below), whose sum is σ = 30679730461752. Its totient is φ = 10226576820582.

The previous prime is 20453153641159. The next prime is 20453153641187. The reversal of 20453153641166 is 66114635135402.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20453153641166.

It is a congruent number.

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, 5113288410290 + ... + 5113288410293.

It is an arithmetic number, because the mean of its divisors is an integer number (7669932615438).

Almost surely, 2^{20453153641166} is an apocalyptic number.

20453153641166 is a deficient number, since it is larger than the sum of its proper divisors (10226576820586).

20453153641166 is a wasteful number, since it uses less digits than its factorization.

20453153641166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10226576820585.

The product of its (nonzero) digits is 1555200, while the sum is 47.

Adding to 20453153641166 its reverse (66114635135402), we get a palindrome (86567788776568).

The spelling of 20453153641166 in words is "twenty trillion, four hundred fifty-three billion, one hundred fifty-three million, six hundred forty-one thousand, one hundred sixty-six".