40078852679 has 2 divisors, whose sum is σ = 40078852680. Its totient is φ = 40078852678.

The previous prime is 40078852609. The next prime is 40078852691. The reversal of 40078852679 is 97625887004.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40078852679 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40078852609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20039426339 + 20039426340.

It is an arithmetic number, because the mean of its divisors is an integer number (20039426340).

Almost surely, 2^40078852679 is an apocalyptic number.

40078852679 is a deficient number, since it is larger than the sum of its proper divisors (1).

40078852679 is an equidigital number, since it uses as much as digits as its factorization.

40078852679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 40078852679 in words is "forty billion, seventy-eight million, eight hundred fifty-two thousand, six hundred seventy-nine".