65645245303667 has 4 divisors (see below), whose sum is σ = 65699363396640. Its totient is φ = 65591127210696.

The previous prime is 65645245303639. The next prime is 65645245303711. The reversal of 65645245303667 is 76630354254656.

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 65645245303667 - 2²⁶ = 65645178194803 is a prime.

It is a super-2 number, since 2×65645245303667² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65645245303607) 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, 27059044667 + ... + 27059047092.

It is an arithmetic number, because the mean of its divisors is an integer number (16424840849160).

Almost surely, 2^{65645245303667} is an apocalyptic number.

65645245303667 is a deficient number, since it is larger than the sum of its proper divisors (54118092973).

65645245303667 is a wasteful number, since it uses less digits than its factorization.

65645245303667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54118092972.

The product of its (nonzero) digits is 326592000, while the sum is 62.

The spelling of 65645245303667 in words is "sixty-five trillion, six hundred forty-five billion, two hundred forty-five million, three hundred three thousand, six hundred sixty-seven".