40204121453 has 2 divisors, whose sum is σ = 40204121454. Its totient is φ = 40204121452.

The previous prime is 40204121443. The next prime is 40204121497. The reversal of 40204121453 is 35412140204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38518772644 + 1685348809 = 196262^2 + 41053^2 .

It is a cyclic number.

It is not a de Polignac number, because 40204121453 - 2³² = 35909154157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40204121443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102060726 + 20102060727.

It is an arithmetic number, because the mean of its divisors is an integer number (20102060727).

Almost surely, 2^40204121453 is an apocalyptic number.

It is an amenable number.

40204121453 is a deficient number, since it is larger than the sum of its proper divisors (1).

40204121453 is an equidigital number, since it uses as much as digits as its factorization.

40204121453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 40204121453 its reverse (35412140204), we get a palindrome (75616261657).

The spelling of 40204121453 in words is "forty billion, two hundred four million, one hundred twenty-one thousand, four hundred fifty-three".