40455442505393 has 2 divisors, whose sum is σ = 40455442505394. Its totient is φ = 40455442505392.

The previous prime is 40455442505321. The next prime is 40455442505399. The reversal of 40455442505393 is 39350524455404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38906244075169 + 1549198430224 = 6237487^2 + 1244668^2 .

It is a cyclic number.

It is not a de Polignac number, because 40455442505393 - 2¹⁶ = 40455442439857 is a prime.

It is a super-3 number, since 3×40455442505393³ (a number of 42 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (40455442505399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20227721252696 + 20227721252697.

It is an arithmetic number, because the mean of its divisors is an integer number (20227721252697).

Almost surely, 2^{40455442505393} is an apocalyptic number.

It is an amenable number.

40455442505393 is a deficient number, since it is larger than the sum of its proper divisors (1).

40455442505393 is an equidigital number, since it uses as much as digits as its factorization.

40455442505393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920000, while the sum is 53.

The spelling of 40455442505393 in words is "forty trillion, four hundred fifty-five billion, four hundred forty-two million, five hundred five thousand, three hundred ninety-three".