40408762633 has 2 divisors, whose sum is σ = 40408762634. Its totient is φ = 40408762632.

The previous prime is 40408762631. The next prime is 40408762643. The reversal of 40408762633 is 33626780404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39699765504 + 708997129 = 199248^2 + 26627^2 .

It is a cyclic number.

It is not a de Polignac number, because 40408762633 - 2¹ = 40408762631 is a prime.

Together with 40408762631, 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 40408762633.

It is not a weakly prime, because it can be changed into another prime (40408762631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20204381316 + 20204381317.

It is an arithmetic number, because the mean of its divisors is an integer number (20204381317).

Almost surely, 2^40408762633 is an apocalyptic number.

It is an amenable number.

40408762633 is a deficient number, since it is larger than the sum of its proper divisors (1).

40408762633 is an equidigital number, since it uses as much as digits as its factorization.

40408762633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 40408762633 in words is "forty billion, four hundred eight million, seven hundred sixty-two thousand, six hundred thirty-three".