20453201121066 has 16 divisors (see below), whose sum is σ = 46750173991104. Its totient is φ = 5843771748864.

The previous prime is 20453201121061. The next prime is 20453201121097. The reversal of 20453201121066 is 66012110235402.

It is a super-4 number, since 4×20453201121066⁴ (a number of 54 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (20453201121061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243490489495 + ... + 243490489578.

It is an arithmetic number, because the mean of its divisors is an integer number (2921885874444).

Almost surely, 2^{20453201121066} is an apocalyptic number.

20453201121066 is an abundant number, since it is smaller than the sum of its proper divisors (26296972870038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20453201121066 is a wasteful number, since it uses less digits than its factorization.

20453201121066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486980979085.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 20453201121066 its reverse (66012110235402), we get a palindrome (86465311356468).

It can be divided in two parts, 2045320 and 1121066, that added together give a triangular number (3166386 = T₂₅₁₆).

The spelling of 20453201121066 in words is "twenty trillion, four hundred fifty-three billion, two hundred one million, one hundred twenty-one thousand, sixty-six".