40440654312533 has 2 divisors, whose sum is σ = 40440654312534. Its totient is φ = 40440654312532.

The previous prime is 40440654312503. The next prime is 40440654312547. The reversal of 40440654312533 is 33521345604404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36210631195729 + 4230023116804 = 6017527^2 + 2056702^2 .

It is a cyclic number.

It is not a de Polignac number, because 40440654312533 - 2⁶ = 40440654312469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40440654312503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20220327156266 + 20220327156267.

It is an arithmetic number, because the mean of its divisors is an integer number (20220327156267).

Almost surely, 2^{40440654312533} is an apocalyptic number.

It is an amenable number.

40440654312533 is a deficient number, since it is larger than the sum of its proper divisors (1).

40440654312533 is an equidigital number, since it uses as much as digits as its factorization.

40440654312533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 44.

Adding to 40440654312533 its reverse (33521345604404), we get a palindrome (73961999916937).

The spelling of 40440654312533 in words is "forty trillion, four hundred forty billion, six hundred fifty-four million, three hundred twelve thousand, five hundred thirty-three".