20045145453 has 8 divisors (see below), whose sum is σ = 26972061600. Its totient is φ = 13240829808.

The previous prime is 20045145443. The next prime is 20045145473. The reversal of 20045145453 is 35454154002.

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

It is not a de Polignac number, because 20045145453 - 2⁶ = 20045145389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045145443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30649743 + ... + 30650396.

It is an arithmetic number, because the mean of its divisors is an integer number (3371507700).

Almost surely, 2^20045145453 is an apocalyptic number.

It is an amenable number.

20045145453 is a deficient number, since it is larger than the sum of its proper divisors (6926916147).

20045145453 is a wasteful number, since it uses less digits than its factorization.

20045145453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61300251.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 20045145453 its reverse (35454154002), we get a palindrome (55499299455).

The spelling of 20045145453 in words is "twenty billion, forty-five million, one hundred forty-five thousand, four hundred fifty-three".