400552693823 has 2 divisors, whose sum is σ = 400552693824. Its totient is φ = 400552693822.

The previous prime is 400552693741. The next prime is 400552693843. The reversal of 400552693823 is 328396255004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400552693823 - 2¹⁸ = 400552431679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400552693843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200276346911 + 200276346912.

It is an arithmetic number, because the mean of its divisors is an integer number (200276346912).

Almost surely, 2^400552693823 is an apocalyptic number.

400552693823 is a deficient number, since it is larger than the sum of its proper divisors (1).

400552693823 is an equidigital number, since it uses as much as digits as its factorization.

400552693823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 400552693823 in words is "four hundred billion, five hundred fifty-two million, six hundred ninety-three thousand, eight hundred twenty-three".