40254434340569 has 2 divisors, whose sum is σ = 40254434340570. Its totient is φ = 40254434340568.

The previous prime is 40254434340493. The next prime is 40254434340599. The reversal of 40254434340569 is 96504343445204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28213222038544 + 12041212302025 = 5311612^2 + 3470045^2 .

It is a cyclic number.

It is not a de Polignac number, because 40254434340569 - 2²⁸ = 40254165905113 is a prime.

It is a super-2 number, since 2×40254434340569² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40254434340569.

It is not a weakly prime, because it can be changed into another prime (40254434340599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20127217170284 + 20127217170285.

It is an arithmetic number, because the mean of its divisors is an integer number (20127217170285).

Almost surely, 2^{40254434340569} is an apocalyptic number.

It is an amenable number.

40254434340569 is a deficient number, since it is larger than the sum of its proper divisors (1).

40254434340569 is an equidigital number, since it uses as much as digits as its factorization.

40254434340569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24883200, while the sum is 53.

The spelling of 40254434340569 in words is "forty trillion, two hundred fifty-four billion, four hundred thirty-four million, three hundred forty thousand, five hundred sixty-nine".