20510479245307 has 2 divisors, whose sum is σ = 20510479245308. Its totient is φ = 20510479245306.

The previous prime is 20510479245247. The next prime is 20510479245323. The reversal of 20510479245307 is 70354297401502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20510479245307 is a prime.

It is not a weakly prime, because it can be changed into another prime (20510479225307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10255239622653 + 10255239622654.

It is an arithmetic number, because the mean of its divisors is an integer number (10255239622654).

Almost surely, 2^{20510479245307} is an apocalyptic number.

20510479245307 is a deficient number, since it is larger than the sum of its proper divisors (1).

20510479245307 is an equidigital number, since it uses as much as digits as its factorization.

20510479245307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 20510479245307 in words is "twenty trillion, five hundred ten billion, four hundred seventy-nine million, two hundred forty-five thousand, three hundred seven".