40804435987253 has 2 divisors, whose sum is σ = 40804435987254. Its totient is φ = 40804435987252.

The previous prime is 40804435987129. The next prime is 40804435987267. The reversal of 40804435987253 is 35278953440804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39079789412689 + 1724646574564 = 6251383^2 + 1313258^2 .

It is a cyclic number.

It is not a de Polignac number, because 40804435987253 - 2¹⁴ = 40804435970869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40804435986253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20402217993626 + 20402217993627.

It is an arithmetic number, because the mean of its divisors is an integer number (20402217993627).

Almost surely, 2^{40804435987253} is an apocalyptic number.

It is an amenable number.

40804435987253 is a deficient number, since it is larger than the sum of its proper divisors (1).

40804435987253 is an equidigital number, since it uses as much as digits as its factorization.

40804435987253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116121600, while the sum is 62.

The spelling of 40804435987253 in words is "forty trillion, eight hundred four billion, four hundred thirty-five million, nine hundred eighty-seven thousand, two hundred fifty-three".