400548381353 has 2 divisors, whose sum is σ = 400548381354. Its totient is φ = 400548381352.

The previous prime is 400548381329. The next prime is 400548381361. The reversal of 400548381353 is 353183845004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386272194064 + 14276187289 = 621508^2 + 119483^2 .

It is a cyclic number.

It is not a de Polignac number, because 400548381353 - 2⁸ = 400548381097 is a prime.

It is a super-2 number, since 2×400548381353² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400548381323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200274190676 + 200274190677.

It is an arithmetic number, because the mean of its divisors is an integer number (200274190677).

Almost surely, 2^400548381353 is an apocalyptic number.

It is an amenable number.

400548381353 is a deficient number, since it is larger than the sum of its proper divisors (1).

400548381353 is an equidigital number, since it uses as much as digits as its factorization.

400548381353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 400548381353 in words is "four hundred billion, five hundred forty-eight million, three hundred eighty-one thousand, three hundred fifty-three".