40428322105481 has 2 divisors, whose sum is σ = 40428322105482. Its totient is φ = 40428322105480.

The previous prime is 40428322105477. The next prime is 40428322105499. The reversal of 40428322105481 is 18450122382404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24505628499856 + 15922693605625 = 4950316^2 + 3990325^2 .

It is a cyclic number.

It is not a de Polignac number, because 40428322105481 - 2² = 40428322105477 is a prime.

It is a super-2 number, since 2×40428322105481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40428322105681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20214161052740 + 20214161052741.

It is an arithmetic number, because the mean of its divisors is an integer number (20214161052741).

Almost surely, 2^{40428322105481} is an apocalyptic number.

It is an amenable number.

40428322105481 is a deficient number, since it is larger than the sum of its proper divisors (1).

40428322105481 is an equidigital number, since it uses as much as digits as its factorization.

40428322105481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 491520, while the sum is 44.

Adding to 40428322105481 its reverse (18450122382404), we get a palindrome (58878444487885).

The spelling of 40428322105481 in words is "forty trillion, four hundred twenty-eight billion, three hundred twenty-two million, one hundred five thousand, four hundred eighty-one".