20271572642453 has 8 divisors (see below), whose sum is σ = 22117061007360. Its totient is φ = 18426520631680.

The previous prime is 20271572642441. The next prime is 20271572642459. The reversal of 20271572642453 is 35424627517202.

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

It is a cyclic number.

It is not a de Polignac number, because 20271572642453 - 2²⁰ = 20271571593877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20271572642459) 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, 108991388 + ... + 109177221.

It is an arithmetic number, because the mean of its divisors is an integer number (2764632625920).

Almost surely, 2^{20271572642453} is an apocalyptic number.

It is an amenable number.

20271572642453 is a deficient number, since it is larger than the sum of its proper divisors (1845488364907).

20271572642453 is a wasteful number, since it uses less digits than its factorization.

20271572642453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218177067.

The product of its (nonzero) digits is 5644800, while the sum is 50.

The spelling of 20271572642453 in words is "twenty trillion, two hundred seventy-one billion, five hundred seventy-two million, six hundred forty-two thousand, four hundred fifty-three".