40558219687 has 2 divisors, whose sum is σ = 40558219688. Its totient is φ = 40558219686.

The previous prime is 40558219657. The next prime is 40558219753. The reversal of 40558219687 is 78691285504.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40558219687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40558219607) 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, 20279109843 + 20279109844.

It is an arithmetic number, because the mean of its divisors is an integer number (20279109844).

Almost surely, 2^40558219687 is an apocalyptic number.

40558219687 is a deficient number, since it is larger than the sum of its proper divisors (1).

40558219687 is an equidigital number, since it uses as much as digits as its factorization.

40558219687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 40558219687 in words is "forty billion, five hundred fifty-eight million, two hundred nineteen thousand, six hundred eighty-seven".