20315606541 has 4 divisors (see below), whose sum is σ = 27087475392. Its totient is φ = 13543737692.

The previous prime is 20315606527. The next prime is 20315606561. The reversal of 20315606541 is 14560651302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20315606541 - 2¹¹ = 20315604493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315606501) 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 3 ways as a sum of consecutive naturals, for example, 3385934421 + ... + 3385934426.

It is an arithmetic number, because the mean of its divisors is an integer number (6771868848).

Almost surely, 2^20315606541 is an apocalyptic number.

It is an amenable number.

20315606541 is a deficient number, since it is larger than the sum of its proper divisors (6771868851).

20315606541 is an equidigital number, since it uses as much as digits as its factorization.

20315606541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771868850.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 20315606541 in words is "twenty billion, three hundred fifteen million, six hundred six thousand, five hundred forty-one".