20453206161166 has 4 divisors (see below), whose sum is σ = 30679809241752. Its totient is φ = 10226603080582.

The previous prime is 20453206161151. The next prime is 20453206161169. The reversal of 20453206161166 is 66116160235402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20453206161169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5113301540290 + ... + 5113301540293.

It is an arithmetic number, because the mean of its divisors is an integer number (7669952310438).

Almost surely, 2^{20453206161166} is an apocalyptic number.

20453206161166 is a deficient number, since it is larger than the sum of its proper divisors (10226603080586).

20453206161166 is a wasteful number, since it uses less digits than its factorization.

20453206161166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226603080585.

The product of its (nonzero) digits is 311040, while the sum is 43.

Adding to 20453206161166 its reverse (66116160235402), we get a palindrome (86569366396568).

The spelling of 20453206161166 in words is "twenty trillion, four hundred fifty-three billion, two hundred six million, one hundred sixty-one thousand, one hundred sixty-six".