20453143202445 has 32 divisors (see below), whose sum is σ = 32758291589760. Its totient is φ = 10897260492800.

The previous prime is 20453143202419. The next prime is 20453143202467. The reversal of 20453143202445 is 54420234135402.

It is not a de Polignac number, because 20453143202445 - 2⁵ = 20453143202413 is a prime.

It is a super-2 number, since 2×20453143202445² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67079977 + ... + 67384193.

It is an arithmetic number, because the mean of its divisors is an integer number (1023696612180).

Almost surely, 2^{20453143202445} is an apocalyptic number.

It is an amenable number.

20453143202445 is a deficient number, since it is larger than the sum of its proper divisors (12305148387315).

20453143202445 is a wasteful number, since it uses less digits than its factorization.

20453143202445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308765.

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 20453143202445 its reverse (54420234135402), we get a palindrome (74873377337847).

The spelling of 20453143202445 in words is "twenty trillion, four hundred fifty-three billion, one hundred forty-three million, two hundred two thousand, four hundred forty-five".