20541610573 has 16 divisors (see below), whose sum is σ = 22721448960. Its totient is φ = 18414442800.

The previous prime is 20541610547. The next prime is 20541610643. The reversal of 20541610573 is 37501614502.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20541610573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20541610273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690186 + ... + 719332.

It is an arithmetic number, because the mean of its divisors is an integer number (1420090560).

Almost surely, 2^20541610573 is an apocalyptic number.

It is an amenable number.

20541610573 is a deficient number, since it is larger than the sum of its proper divisors (2179838387).

20541610573 is a wasteful number, since it uses less digits than its factorization.

20541610573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30048.

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 20541610573 in words is "twenty billion, five hundred forty-one million, six hundred ten thousand, five hundred seventy-three".