65855982005 has 8 divisors (see below), whose sum is σ = 86211467424. Its totient is φ = 47895259600.

The previous prime is 65855981993. The next prime is 65855982007. The reversal of 65855982005 is 50028955856.

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

It is not a de Polignac number, because 65855982005 - 2²⁰ = 65854933429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65855982007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598690691 + ... + 598690800.

It is an arithmetic number, because the mean of its divisors is an integer number (10776433428).

Almost surely, 2^65855982005 is an apocalyptic number.

It is an amenable number.

65855982005 is a deficient number, since it is larger than the sum of its proper divisors (20355485419).

65855982005 is a wasteful number, since it uses less digits than its factorization.

65855982005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197381507.

The product of its (nonzero) digits is 4320000, while the sum is 53.

The spelling of 65855982005 in words is "sixty-five billion, eight hundred fifty-five million, nine hundred eighty-two thousand, five".