65651532643 has 4 divisors (see below), whose sum is σ = 66442515048. Its totient is φ = 64860550240.

The previous prime is 65651532629. The next prime is 65651532659. The reversal of 65651532643 is 34623515656.

65651532643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65651532643 - 2³³ = 57061598051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65651532593 and 65651532602.

It is not an unprimeable number, because it can be changed into a prime (65651532623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395491078 + ... + 395491243.

It is an arithmetic number, because the mean of its divisors is an integer number (16610628762).

Almost surely, 2^65651532643 is an apocalyptic number.

65651532643 is a deficient number, since it is larger than the sum of its proper divisors (790982405).

65651532643 is an equidigital number, since it uses as much as digits as its factorization.

65651532643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790982404.

The product of its digits is 1944000, while the sum is 46.

The spelling of 65651532643 in words is "sixty-five billion, six hundred fifty-one million, five hundred thirty-two thousand, six hundred forty-three".