65543640003 has 12 divisors (see below), whose sum is σ = 95015934208. Its totient is φ = 43538011920.

The previous prime is 65543639963. The next prime is 65543640007. The reversal of 65543640003 is 30004634556.

65543640003 is a `hidden beast` number, since 6 + 5 + 5 + 4 + 3 + 640 + 0 + 0 + 3 = 666.

65543640003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65543640003 - 2¹² = 65543635907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65543640003.

It is not an unprimeable number, because it can be changed into a prime (65543640007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13143043 + ... + 13148028.

Almost surely, 2^65543640003 is an apocalyptic number.

65543640003 is a deficient number, since it is larger than the sum of its proper divisors (29472294205).

65543640003 is a wasteful number, since it uses less digits than its factorization.

65543640003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26291354 (or 26291351 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 65543640003 in words is "sixty-five billion, five hundred forty-three million, six hundred forty thousand, three".