40219216469 has 2 divisors, whose sum is σ = 40219216470. Its totient is φ = 40219216468.

The previous prime is 40219216333. The next prime is 40219216493. The reversal of 40219216469 is 96461291204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35404938244 + 4814278225 = 188162^2 + 69385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40219216469 is a prime.

It is a super-2 number, since 2×40219216469² (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 (40219216669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20109608234 + 20109608235.

It is an arithmetic number, because the mean of its divisors is an integer number (20109608235).

Almost surely, 2^40219216469 is an apocalyptic number.

It is an amenable number.

40219216469 is a deficient number, since it is larger than the sum of its proper divisors (1).

40219216469 is an equidigital number, since it uses as much as digits as its factorization.

40219216469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 40219216469 in words is "forty billion, two hundred nineteen million, two hundred sixteen thousand, four hundred sixty-nine".