401512663 has 2 divisors, whose sum is σ = 401512664. Its totient is φ = 401512662.

The previous prime is 401512609. The next prime is 401512667. The reversal of 401512663 is 366215104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401512663 - 2¹³ = 401504471 is a prime.

It is a super-2 number, since 2×401512663² = 322424837098703138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401512667) 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, 200756331 + 200756332.

It is an arithmetic number, because the mean of its divisors is an integer number (200756332).

Almost surely, 2^401512663 is an apocalyptic number.

401512663 is a deficient number, since it is larger than the sum of its proper divisors (1).

401512663 is an equidigital number, since it uses as much as digits as its factorization.

401512663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 401512663 is about 20037.7808901086. The cubic root of 401512663 is about 737.7339144250.

Adding to 401512663 its reverse (366215104), we get a palindrome (767727767).

The spelling of 401512663 in words is "four hundred one million, five hundred twelve thousand, six hundred sixty-three".