40785889867 has 2 divisors, whose sum is σ = 40785889868. Its totient is φ = 40785889866.

The previous prime is 40785889849. The next prime is 40785889889. The reversal of 40785889867 is 76898858704.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40785889867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40785889796 and 40785889805.

It is not a weakly prime, because it can be changed into another prime (40785829867) 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, 20392944933 + 20392944934.

It is an arithmetic number, because the mean of its divisors is an integer number (20392944934).

Almost surely, 2^40785889867 is an apocalyptic number.

40785889867 is a deficient number, since it is larger than the sum of its proper divisors (1).

40785889867 is an equidigital number, since it uses as much as digits as its factorization.

40785889867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216760320, while the sum is 70.

The spelling of 40785889867 in words is "forty billion, seven hundred eighty-five million, eight hundred eighty-nine thousand, eight hundred sixty-seven".