40235665621033 has 2 divisors, whose sum is σ = 40235665621034. Its totient is φ = 40235665621032.

The previous prime is 40235665621031. The next prime is 40235665621051. The reversal of 40235665621033 is 33012656653204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34176323986704 + 6059341634329 = 5846052^2 + 2461573^2 .

It is a cyclic number.

It is not a de Polignac number, because 40235665621033 - 2¹ = 40235665621031 is a prime.

Together with 40235665621031, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40235665621031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20117832810516 + 20117832810517.

It is an arithmetic number, because the mean of its divisors is an integer number (20117832810517).

Almost surely, 2^{40235665621033} is an apocalyptic number.

It is an amenable number.

40235665621033 is a deficient number, since it is larger than the sum of its proper divisors (1).

40235665621033 is an equidigital number, since it uses as much as digits as its factorization.

40235665621033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 46.

The spelling of 40235665621033 in words is "forty trillion, two hundred thirty-five billion, six hundred sixty-five million, six hundred twenty-one thousand, thirty-three".