400143132023161 has 2 divisors, whose sum is σ = 400143132023162. Its totient is φ = 400143132023160.

The previous prime is 400143132023113. The next prime is 400143132023263. The reversal of 400143132023161 is 161320231341004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395713306791936 + 4429825231225 = 19892544^2 + 2104715^2 .

It is a cyclic number.

It is not a de Polignac number, because 400143132023161 - 2¹⁷ = 400143131892089 is a prime.

It is a super-2 number, since 2×400143132023161² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400143132023561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200071566011580 + 200071566011581.

It is an arithmetic number, because the mean of its divisors is an integer number (200071566011581).

Almost surely, 2^{400143132023161} is an apocalyptic number.

It is an amenable number.

400143132023161 is a deficient number, since it is larger than the sum of its proper divisors (1).

400143132023161 is an equidigital number, since it uses as much as digits as its factorization.

400143132023161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 400143132023161 its reverse (161320231341004), we get a palindrome (561463363364165).

The spelling of 400143132023161 in words is "four hundred trillion, one hundred forty-three billion, one hundred thirty-two million, twenty-three thousand, one hundred sixty-one".