20541357553 has 8 divisors (see below), whose sum is σ = 20637792000. Its totient is φ = 20444962128.

The previous prime is 20541357509. The next prime is 20541357563. The reversal of 20541357553 is 35575314502.

It is a happy number.

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 20541357553 - 2⁹ = 20541357041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20541357563) 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, 1934583 + ... + 1945171.

It is an arithmetic number, because the mean of its divisors is an integer number (2579724000).

Almost surely, 2^20541357553 is an apocalyptic number.

It is an amenable number.

20541357553 is a deficient number, since it is larger than the sum of its proper divisors (96434447).

20541357553 is a wasteful number, since it uses less digits than its factorization.

20541357553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19511.

The product of its (nonzero) digits is 315000, while the sum is 40.

The spelling of 20541357553 in words is "twenty billion, five hundred forty-one million, three hundred fifty-seven thousand, five hundred fifty-three".