400560221286481 has 2 divisors, whose sum is σ = 400560221286482. Its totient is φ = 400560221286480.

The previous prime is 400560221286419. The next prime is 400560221286497. The reversal of 400560221286481 is 184682122065004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380308502250000 + 20251719036481 = 19501500^2 + 4500191^2 .

It is a cyclic number.

It is not a de Polignac number, because 400560221286481 - 2³¹ = 400558073802833 is a prime.

It is a super-2 number, since 2×400560221286481² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400560221286581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200280110643240 + 200280110643241.

It is an arithmetic number, because the mean of its divisors is an integer number (200280110643241).

Almost surely, 2^{400560221286481} is an apocalyptic number.

It is an amenable number.

400560221286481 is a deficient number, since it is larger than the sum of its proper divisors (1).

400560221286481 is an equidigital number, since it uses as much as digits as its factorization.

400560221286481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 400560221286481 in words is "four hundred trillion, five hundred sixty billion, two hundred twenty-one million, two hundred eighty-six thousand, four hundred eighty-one".