40502820469 has 2 divisors, whose sum is σ = 40502820470. Its totient is φ = 40502820468.

The previous prime is 40502820403. The next prime is 40502820517. The reversal of 40502820469 is 96402820504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31626354244 + 8876466225 = 177838^2 + 94215^2 .

It is a cyclic number.

It is not a de Polignac number, because 40502820469 - 2¹⁵ = 40502787701 is a prime.

It is a super-2 number, since 2×40502820469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40502820269) 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, 20251410234 + 20251410235.

It is an arithmetic number, because the mean of its divisors is an integer number (20251410235).

Almost surely, 2^40502820469 is an apocalyptic number.

It is an amenable number.

40502820469 is a deficient number, since it is larger than the sum of its proper divisors (1).

40502820469 is an equidigital number, since it uses as much as digits as its factorization.

40502820469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 40502820469 in words is "forty billion, five hundred two million, eight hundred twenty thousand, four hundred sixty-nine".