20541610547 has 2 divisors, whose sum is σ = 20541610548. Its totient is φ = 20541610546.

The previous prime is 20541610517. The next prime is 20541610643. The reversal of 20541610547 is 74501614502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20541610547 - 2¹⁴ = 20541594163 is a prime.

It is not a weakly prime, because it can be changed into another prime (20541610517) 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 as a sum of consecutive naturals, namely, 10270805273 + 10270805274.

It is an arithmetic number, because the mean of its divisors is an integer number (10270805274).

Almost surely, 2^20541610547 is an apocalyptic number.

20541610547 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541610547 is an equidigital number, since it uses as much as digits as its factorization.

20541610547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 20541610547 in words is "twenty billion, five hundred forty-one million, six hundred ten thousand, five hundred forty-seven".