40315452481 has 2 divisors, whose sum is σ = 40315452482. Its totient is φ = 40315452480.

The previous prime is 40315452473. The next prime is 40315452563. The reversal of 40315452481 is 18425451304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33712264881 + 6603187600 = 183609^2 + 81260^2 .

It is a cyclic number.

It is not a de Polignac number, because 40315452481 - 2³ = 40315452473 is a prime.

It is a super-2 number, since 2×40315452481² (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 40315452481.

It is not a weakly prime, because it can be changed into another prime (40315452431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20157726240 + 20157726241.

It is an arithmetic number, because the mean of its divisors is an integer number (20157726241).

Almost surely, 2^40315452481 is an apocalyptic number.

It is an amenable number.

40315452481 is a deficient number, since it is larger than the sum of its proper divisors (1).

40315452481 is an equidigital number, since it uses as much as digits as its factorization.

40315452481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 40315452481 in words is "forty billion, three hundred fifteen million, four hundred fifty-two thousand, four hundred eighty-one".