20504500115541 has 8 divisors (see below), whose sum is σ = 29442359140320. Its totient is φ = 12618153917232.

The previous prime is 20504500115497. The next prime is 20504500115543. The reversal of 20504500115541 is 14551100540502.

It is a happy number.

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

It is not a de Polignac number, because 20504500115541 - 2¹⁷ = 20504499984469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504500115543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262878206571 + ... + 262878206648.

It is an arithmetic number, because the mean of its divisors is an integer number (3680294892540).

Almost surely, 2^{20504500115541} is an apocalyptic number.

It is an amenable number.

20504500115541 is a deficient number, since it is larger than the sum of its proper divisors (8937859024779).

20504500115541 is a wasteful number, since it uses less digits than its factorization.

20504500115541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525756413235.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 20504500115541 in words is "twenty trillion, five hundred four billion, five hundred million, one hundred fifteen thousand, five hundred forty-one".