40651316779 has 2 divisors, whose sum is σ = 40651316780. Its totient is φ = 40651316778.

The previous prime is 40651316777. The next prime is 40651316851. The reversal of 40651316779 is 97761315604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40651316779 - 2¹ = 40651316777 is a prime.

Together with 40651316777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40651316777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20325658389 + 20325658390.

It is an arithmetic number, because the mean of its divisors is an integer number (20325658390).

Almost surely, 2^40651316779 is an apocalyptic number.

40651316779 is a deficient number, since it is larger than the sum of its proper divisors (1).

40651316779 is an equidigital number, since it uses as much as digits as its factorization.

40651316779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 40651316779 in words is "forty billion, six hundred fifty-one million, three hundred sixteen thousand, seven hundred seventy-nine".