40838162669 has 2 divisors, whose sum is σ = 40838162670. Its totient is φ = 40838162668.

The previous prime is 40838162633. The next prime is 40838162711. The reversal of 40838162669 is 96626183804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34535390569 + 6302772100 = 185837^2 + 79390^2 .

It is a cyclic number.

It is not a de Polignac number, because 40838162669 - 2²⁸ = 40569727213 is a prime.

It is a super-2 number, since 2×40838162669² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40838162669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40838162269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20419081334 + 20419081335.

It is an arithmetic number, because the mean of its divisors is an integer number (20419081335).

Almost surely, 2^40838162669 is an apocalyptic number.

It is an amenable number.

40838162669 is a deficient number, since it is larger than the sum of its proper divisors (1).

40838162669 is an equidigital number, since it uses as much as digits as its factorization.

40838162669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 40838162669 in words is "forty billion, eight hundred thirty-eight million, one hundred sixty-two thousand, six hundred sixty-nine".