401252446043129 has 2 divisors, whose sum is σ = 401252446043130. Its totient is φ = 401252446043128.

The previous prime is 401252446043101. The next prime is 401252446043173. The reversal of 401252446043129 is 921340644252104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397023159193600 + 4229286849529 = 19925440^2 + 2056523^2 .

It is a cyclic number.

It is not a de Polignac number, because 401252446043129 - 2⁸ = 401252446042873 is a prime.

It is a super-2 number, since 2×401252446043129² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401252446093129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200626223021564 + 200626223021565.

It is an arithmetic number, because the mean of its divisors is an integer number (200626223021565).

Almost surely, 2^{401252446043129} is an apocalyptic number.

It is an amenable number.

401252446043129 is a deficient number, since it is larger than the sum of its proper divisors (1).

401252446043129 is an equidigital number, since it uses as much as digits as its factorization.

401252446043129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 401252446043129 in words is "four hundred one trillion, two hundred fifty-two billion, four hundred forty-six million, forty-three thousand, one hundred twenty-nine".