42745631353169 has 2 divisors, whose sum is σ = 42745631353170. Its totient is φ = 42745631353168.

The previous prime is 42745631353133. The next prime is 42745631353213. The reversal of 42745631353169 is 96135313654724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38624832852544 + 4120798500625 = 6214888^2 + 2029975^2 .

It is a cyclic number.

It is not a de Polignac number, because 42745631353169 - 2⁴⁴ = 25153445308753 is a prime.

It is a super-2 number, since 2×42745631353169² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42745631358169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21372815676584 + 21372815676585.

It is an arithmetic number, because the mean of its divisors is an integer number (21372815676585).

Almost surely, 2^{42745631353169} is an apocalyptic number.

It is an amenable number.

42745631353169 is a deficient number, since it is larger than the sum of its proper divisors (1).

42745631353169 is an equidigital number, since it uses as much as digits as its factorization.

42745631353169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48988800, while the sum is 59.

The spelling of 42745631353169 in words is "forty-two trillion, seven hundred forty-five billion, six hundred thirty-one million, three hundred fifty-three thousand, one hundred sixty-nine".