40502291917 has 2 divisors, whose sum is σ = 40502291918. Its totient is φ = 40502291916.

The previous prime is 40502291867. The next prime is 40502291993. The reversal of 40502291917 is 71919220504.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40489085961 + 13205956 = 201219^2 + 3634^2 .

It is a cyclic number.

It is not a de Polignac number, because 40502291917 - 2⁷ = 40502291789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40502291917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40502291617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20251145958 + 20251145959.

It is an arithmetic number, because the mean of its divisors is an integer number (20251145959).

Almost surely, 2^40502291917 is an apocalyptic number.

It is an amenable number.

40502291917 is a deficient number, since it is larger than the sum of its proper divisors (1).

40502291917 is an equidigital number, since it uses as much as digits as its factorization.

40502291917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 40502291917 in words is "forty billion, five hundred two million, two hundred ninety-one thousand, nine hundred seventeen".