65661164152 has 16 divisors (see below), whose sum is σ = 128467495440. Its totient is φ = 31403165376.

The previous prime is 65661164119. The next prime is 65661164161. The reversal of 65661164152 is 25146116656.

It is a super-2 number, since 2×65661164152² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65661164099 and 65661164108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178426893 + ... + 178427260.

It is an arithmetic number, because the mean of its divisors is an integer number (8029218465).

Almost surely, 2^65661164152 is an apocalyptic number.

It is an amenable number.

65661164152 is a deficient number, since it is larger than the sum of its proper divisors (62806331288).

65661164152 is a wasteful number, since it uses less digits than its factorization.

65661164152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356854182 (or 356854178 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The spelling of 65661164152 in words is "sixty-five billion, six hundred sixty-one million, one hundred sixty-four thousand, one hundred fifty-two".