65620536163 has 16 divisors (see below), whose sum is σ = 85514546880. Its totient is φ = 48865453056.

The previous prime is 65620536139. The next prime is 65620536199. The reversal of 65620536163 is 36163502656.

It is a de Polignac number, because none of the positive numbers 2^k-65620536163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65620533163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21207418 + ... + 21210511.

It is an arithmetic number, because the mean of its divisors is an integer number (5344659180).

Almost surely, 2^65620536163 is an apocalyptic number.

65620536163 is a deficient number, since it is larger than the sum of its proper divisors (19894010717).

65620536163 is a wasteful number, since it uses less digits than its factorization.

65620536163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42417966.

The product of its (nonzero) digits is 583200, while the sum is 43.

The spelling of 65620536163 in words is "sixty-five billion, six hundred twenty million, five hundred thirty-six thousand, one hundred sixty-three".