43240638967 has 2 divisors, whose sum is σ = 43240638968. Its totient is φ = 43240638966.

The previous prime is 43240638953. The next prime is 43240639007. The reversal of 43240638967 is 76983604234.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43240638967 - 2⁷ = 43240638839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43240638907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620319483 + 21620319484.

It is an arithmetic number, because the mean of its divisors is an integer number (21620319484).

Almost surely, 2^43240638967 is an apocalyptic number.

43240638967 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240638967 is an equidigital number, since it uses as much as digits as its factorization.

43240638967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 43240638967 in words is "forty-three billion, two hundred forty million, six hundred thirty-eight thousand, nine hundred sixty-seven".