40263531412633 has 2 divisors, whose sum is σ = 40263531412634. Its totient is φ = 40263531412632.

The previous prime is 40263531412631. The next prime is 40263531412679. The reversal of 40263531412633 is 33621413536204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23806124239104 + 16457407173529 = 4879152^2 + 4056773^2 .

It is a cyclic number.

It is not a de Polignac number, because 40263531412633 - 2¹ = 40263531412631 is a prime.

Together with 40263531412631, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40263531412633.

It is not a weakly prime, because it can be changed into another prime (40263531412631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20131765706316 + 20131765706317.

It is an arithmetic number, because the mean of its divisors is an integer number (20131765706317).

Almost surely, 2^{40263531412633} is an apocalyptic number.

It is an amenable number.

40263531412633 is a deficient number, since it is larger than the sum of its proper divisors (1).

40263531412633 is an equidigital number, since it uses as much as digits as its factorization.

40263531412633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 43.

Adding to 40263531412633 its reverse (33621413536204), we get a palindrome (73884944948837).

The spelling of 40263531412633 in words is "forty trillion, two hundred sixty-three billion, five hundred thirty-one million, four hundred twelve thousand, six hundred thirty-three".