400000027663 has 2 divisors, whose sum is σ = 400000027664. Its totient is φ = 400000027662.

The previous prime is 400000027639. The next prime is 400000027711. The reversal of 400000027663 is 366720000004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400000027663 - 2²¹ = 399997930511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400000022663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200000013831 + 200000013832.

It is an arithmetic number, because the mean of its divisors is an integer number (200000013832).

Almost surely, 2^400000027663 is an apocalyptic number.

400000027663 is a deficient number, since it is larger than the sum of its proper divisors (1).

400000027663 is an equidigital number, since it uses as much as digits as its factorization.

400000027663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 400000027663 its reverse (366720000004), we get a palindrome (766720027667).

The spelling of 400000027663 in words is "four hundred billion, twenty-seven thousand, six hundred sixty-three".