40243600679 has 2 divisors, whose sum is σ = 40243600680. Its totient is φ = 40243600678.

The previous prime is 40243600609. The next prime is 40243600763. The reversal of 40243600679 is 97600634204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40243600679 is a prime.

It is a super-2 number, since 2×40243600679² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40243600609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121800339 + 20121800340.

It is an arithmetic number, because the mean of its divisors is an integer number (20121800340).

Almost surely, 2^40243600679 is an apocalyptic number.

40243600679 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243600679 is an equidigital number, since it uses as much as digits as its factorization.

40243600679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 40243600679 in words is "forty billion, two hundred forty-three million, six hundred thousand, six hundred seventy-nine".