65011645505 has 8 divisors (see below), whose sum is σ = 80530554624. Its totient is φ = 50331596400.

The previous prime is 65011645487. The next prime is 65011645511. The reversal of 65011645505 is 50554611056.

It is a happy number.

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

It is not a de Polignac number, because 65011645505 - 2¹⁸ = 65011383361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209714831 + ... + 209715140.

It is an arithmetic number, because the mean of its divisors is an integer number (10066319328).

Almost surely, 2^65011645505 is an apocalyptic number.

It is an amenable number.

65011645505 is a deficient number, since it is larger than the sum of its proper divisors (15518909119).

65011645505 is a wasteful number, since it uses less digits than its factorization.

65011645505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419430007.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 65011645505 in words is "sixty-five billion, eleven million, six hundred forty-five thousand, five hundred five".