402251152169 has 2 divisors, whose sum is σ = 402251152170. Its totient is φ = 402251152168.

The previous prime is 402251152139. The next prime is 402251152217. The reversal of 402251152169 is 961251152204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273450555625 + 128800596544 = 522925^2 + 358888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402251152169 is a prime.

It is a super-2 number, since 2×402251152169² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402251152139) 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, 201125576084 + 201125576085.

It is an arithmetic number, because the mean of its divisors is an integer number (201125576085).

Almost surely, 2^402251152169 is an apocalyptic number.

It is an amenable number.

402251152169 is a deficient number, since it is larger than the sum of its proper divisors (1).

402251152169 is an equidigital number, since it uses as much as digits as its factorization.

402251152169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 402251152169 in words is "four hundred two billion, two hundred fifty-one million, one hundred fifty-two thousand, one hundred sixty-nine".