10643505487 has 2 divisors, whose sum is σ = 10643505488. Its totient is φ = 10643505486.

The previous prime is 10643505419. The next prime is 10643505511. The reversal of 10643505487 is 78450534601.

10643505487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10643505487 is a prime.

It is a super-2 number, since 2×10643505487² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10643505407) 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, 5321752743 + 5321752744.

It is an arithmetic number, because the mean of its divisors is an integer number (5321752744).

Almost surely, 2^10643505487 is an apocalyptic number.

10643505487 is a deficient number, since it is larger than the sum of its proper divisors (1).

10643505487 is an equidigital number, since it uses as much as digits as its factorization.

10643505487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 10643505487 in words is "ten billion, six hundred forty-three million, five hundred five thousand, four hundred eighty-seven".