402250441181 has 2 divisors, whose sum is σ = 402250441182. Its totient is φ = 402250441180.

The previous prime is 402250441139. The next prime is 402250441213. The reversal of 402250441181 is 181144052204.

It is an a-pointer prime, because the next prime (402250441213) can be obtained adding 402250441181 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386995968100 + 15254473081 = 622090^2 + 123509^2 .

It is a cyclic number.

It is not a de Polignac number, because 402250441181 - 2³⁴ = 385070571997 is a prime.

It is a super-2 number, since 2×402250441181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402250741181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201125220590 + 201125220591.

It is an arithmetic number, because the mean of its divisors is an integer number (201125220591).

Almost surely, 2^402250441181 is an apocalyptic number.

It is an amenable number.

402250441181 is a deficient number, since it is larger than the sum of its proper divisors (1).

402250441181 is an equidigital number, since it uses as much as digits as its factorization.

402250441181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10240, while the sum is 32.

Adding to 402250441181 its reverse (181144052204), we get a palindrome (583394493385).

The spelling of 402250441181 in words is "four hundred two billion, two hundred fifty million, four hundred forty-one thousand, one hundred eighty-one".