40583644987 has 2 divisors, whose sum is σ = 40583644988. Its totient is φ = 40583644986.

The previous prime is 40583644963. The next prime is 40583644993. The reversal of 40583644987 is 78944638504.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40583644987 is a prime.

It is not a weakly prime, because it can be changed into another prime (40583644487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20291822493 + 20291822494.

It is an arithmetic number, because the mean of its divisors is an integer number (20291822494).

Almost surely, 2^40583644987 is an apocalyptic number.

40583644987 is a deficient number, since it is larger than the sum of its proper divisors (1).

40583644987 is an equidigital number, since it uses as much as digits as its factorization.

40583644987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23224320, while the sum is 58.

The spelling of 40583644987 in words is "forty billion, five hundred eighty-three million, six hundred forty-four thousand, nine hundred eighty-seven".