20305524971 has 2 divisors, whose sum is σ = 20305524972. Its totient is φ = 20305524970.

The previous prime is 20305524937. The next prime is 20305524983. The reversal of 20305524971 is 17942550302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20305524971 - 2¹⁸ = 20305262827 is a prime.

It is not a weakly prime, because it can be changed into another prime (20305524271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10152762485 + 10152762486.

It is an arithmetic number, because the mean of its divisors is an integer number (10152762486).

Almost surely, 2^20305524971 is an apocalyptic number.

20305524971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20305524971 is an equidigital number, since it uses as much as digits as its factorization.

20305524971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 20305524971 in words is "twenty billion, three hundred five million, five hundred twenty-four thousand, nine hundred seventy-one".