20348579049543 has 40 divisors (see below), whose sum is σ = 31778841679200. Its totient is φ = 12975904852416.

The previous prime is 20348579049517. The next prime is 20348579049607. The reversal of 20348579049543 is 34594097584302.

20348579049543 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 8 + 57 + 90 + 495 + 4 + 3 = 666.

It is not a de Polignac number, because 20348579049543 - 2⁶ = 20348579049479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20348579049143) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9338178 + ... + 11309231.

It is an arithmetic number, because the mean of its divisors is an integer number (794471041980).

Almost surely, 2^{20348579049543} is an apocalyptic number.

20348579049543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20348579049543 is a deficient number, since it is larger than the sum of its proper divisors (11430262629657).

20348579049543 is an frugal number, since it uses more digits than its factorization.

20348579049543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20647490 (or 20647435 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 63.

The spelling of 20348579049543 in words is "twenty trillion, three hundred forty-eight billion, five hundred seventy-nine million, forty-nine thousand, five hundred forty-three".