20355153053453 has 16 divisors (see below), whose sum is σ = 20679269887920. Its totient is φ = 20032307375616.

The previous prime is 20355153053203. The next prime is 20355153053479. The reversal of 20355153053453 is 35435035155302.

It can be written as a sum of positive squares in 8 ways, for example, as 104550048964 + 20250603004489 = 323342^2 + 4500067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20355153053453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355153053153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62031851 + ... + 62359127.

It is an arithmetic number, because the mean of its divisors is an integer number (1292454367995).

Almost surely, 2^{20355153053453} is an apocalyptic number.

It is an amenable number.

20355153053453 is a deficient number, since it is larger than the sum of its proper divisors (324116834467).

20355153053453 is a wasteful number, since it uses less digits than its factorization.

20355153053453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329216.

The product of its (nonzero) digits is 2025000, while the sum is 44.

The spelling of 20355153053453 in words is "twenty trillion, three hundred fifty-five billion, one hundred fifty-three million, fifty-three thousand, four hundred fifty-three".