43240639007 has 2 divisors, whose sum is σ = 43240639008. Its totient is φ = 43240639006.

The previous prime is 43240638967. The next prime is 43240639027. The reversal of 43240639007 is 70093604234.

43240639007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43240639007 - 2⁶ = 43240638943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43240639027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620319503 + 21620319504.

It is an arithmetic number, because the mean of its divisors is an integer number (21620319504).

Almost surely, 2^43240639007 is an apocalyptic number.

43240639007 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240639007 is an equidigital number, since it uses as much as digits as its factorization.

43240639007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 38.

The spelling of 43240639007 in words is "forty-three billion, two hundred forty million, six hundred thirty-nine thousand, seven".