40436689207 has 2 divisors, whose sum is σ = 40436689208. Its totient is φ = 40436689206.

The previous prime is 40436689169. The next prime is 40436689283. The reversal of 40436689207 is 70298663404.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40436689207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40436683207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20218344603 + 20218344604.

It is an arithmetic number, because the mean of its divisors is an integer number (20218344604).

Almost surely, 2^40436689207 is an apocalyptic number.

40436689207 is a deficient number, since it is larger than the sum of its proper divisors (1).

40436689207 is an equidigital number, since it uses as much as digits as its factorization.

40436689207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 40436689207 in words is "forty billion, four hundred thirty-six million, six hundred eighty-nine thousand, two hundred seven".