65605165651 has 8 divisors (see below), whose sum is σ = 66084505200. Its totient is φ = 65125931520.

The previous prime is 65605165649. The next prime is 65605165657. The reversal of 65605165651 is 15656150656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65605165651 - 2¹ = 65605165649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65605165657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576431 + ... + 1617511.

It is an arithmetic number, because the mean of its divisors is an integer number (8260563150).

Almost surely, 2^65605165651 is an apocalyptic number.

65605165651 is a deficient number, since it is larger than the sum of its proper divisors (479339549).

65605165651 is a wasteful number, since it uses less digits than its factorization.

65605165651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52709.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 65605165651 in words is "sixty-five billion, six hundred five million, one hundred sixty-five thousand, six hundred fifty-one".