65165618136 has 32 divisors (see below), whose sum is σ = 162966970800. Its totient is φ = 21714816000.

The previous prime is 65165618131. The next prime is 65165618159. The reversal of 65165618136 is 63181656156.

It is a super-2 number, since 2×65165618136² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65165618131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365365 + ... + 513636.

Almost surely, 2^65165618136 is an apocalyptic number.

It is an amenable number.

65165618136 is an abundant number, since it is smaller than the sum of its proper divisors (97801352664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65165618136 is a wasteful number, since it uses less digits than its factorization.

65165618136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882099 (or 882095 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The spelling of 65165618136 in words is "sixty-five billion, one hundred sixty-five million, six hundred eighteen thousand, one hundred thirty-six".