20245433454187 has 2 divisors, whose sum is σ = 20245433454188. Its totient is φ = 20245433454186.

The previous prime is 20245433454157. The next prime is 20245433454223. The reversal of 20245433454187 is 78145433454202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20245433454187 - 2¹⁹ = 20245432929899 is a prime.

It is not a weakly prime, because it can be changed into another prime (20245433454157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10122716727093 + 10122716727094.

It is an arithmetic number, because the mean of its divisors is an integer number (10122716727094).

Almost surely, 2^{20245433454187} is an apocalyptic number.

20245433454187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20245433454187 is an equidigital number, since it uses as much as digits as its factorization.

20245433454187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12902400, while the sum is 52.

The spelling of 20245433454187 in words is "twenty trillion, two hundred forty-five billion, four hundred thirty-three million, four hundred fifty-four thousand, one hundred eighty-seven".