42500387445847 has 2 divisors, whose sum is σ = 42500387445848. Its totient is φ = 42500387445846.

The previous prime is 42500387445829. The next prime is 42500387445863. The reversal of 42500387445847 is 74854478300524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42500387445847 - 2³⁵ = 42466027707479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42500387445647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21250193722923 + 21250193722924.

It is an arithmetic number, because the mean of its divisors is an integer number (21250193722924).

Almost surely, 2^{42500387445847} is an apocalyptic number.

42500387445847 is a deficient number, since it is larger than the sum of its proper divisors (1).

42500387445847 is an equidigital number, since it uses as much as digits as its factorization.

42500387445847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120422400, while the sum is 61.

The spelling of 42500387445847 in words is "forty-two trillion, five hundred billion, three hundred eighty-seven million, four hundred forty-five thousand, eight hundred forty-seven".