65505704999979 has 8 divisors (see below), whose sum is σ = 87340982787072. Its totient is φ = 43670448606440.

The previous prime is 65505704999957. The next prime is 65505705000011. The reversal of 65505704999979 is 97999940750556.

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 65505704999979 - 2⁵ = 65505704999947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65505704999479) 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, 4264234 + ... + 12214544.

It is an arithmetic number, because the mean of its divisors is an integer number (10917622848384).

Almost surely, 2^{65505704999979} is an apocalyptic number.

65505704999979 is a deficient number, since it is larger than the sum of its proper divisors (21835277787093).

65505704999979 is a wasteful number, since it uses less digits than its factorization.

65505704999979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10696777.

The product of its (nonzero) digits is 8680203000, while the sum is 84.

The spelling of 65505704999979 in words is "sixty-five trillion, five hundred five billion, seven hundred four million, nine hundred ninety-nine thousand, nine hundred seventy-nine".