63543602431 has 2 divisors, whose sum is σ = 63543602432. Its totient is φ = 63543602430.

The previous prime is 63543602389. The next prime is 63543602443. The reversal of 63543602431 is 13420634536.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63543602431 - 2¹⁷ = 63543471359 is a prime.

It is a super-2 number, since 2×63543602431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63543602131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31771801215 + 31771801216.

It is an arithmetic number, because the mean of its divisors is an integer number (31771801216).

Almost surely, 2^63543602431 is an apocalyptic number.

63543602431 is a deficient number, since it is larger than the sum of its proper divisors (1).

63543602431 is an equidigital number, since it uses as much as digits as its factorization.

63543602431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 63543602431 in words is "sixty-three billion, five hundred forty-three million, six hundred two thousand, four hundred thirty-one".