42811081253 has 2 divisors, whose sum is σ = 42811081254. Its totient is φ = 42811081252.

The previous prime is 42811081231. The next prime is 42811081279. The reversal of 42811081253 is 35218011824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29425285444 + 13385795809 = 171538^2 + 115697^2 .

It is a cyclic number.

It is not a de Polignac number, because 42811081253 - 2⁸ = 42811080997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42811081553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21405540626 + 21405540627.

It is an arithmetic number, because the mean of its divisors is an integer number (21405540627).

Almost surely, 2^42811081253 is an apocalyptic number.

It is an amenable number.

42811081253 is a deficient number, since it is larger than the sum of its proper divisors (1).

42811081253 is an equidigital number, since it uses as much as digits as its factorization.

42811081253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 35.

The spelling of 42811081253 in words is "forty-two billion, eight hundred eleven million, eighty-one thousand, two hundred fifty-three".