65018638679 has 4 divisors (see below), whose sum is σ = 65594024976. Its totient is φ = 64443252384.

The previous prime is 65018638639. The next prime is 65018638829. The reversal of 65018638679 is 97683681056.

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 65018638679 - 2³² = 60723671383 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 (65018638639) 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, 287692979 + ... + 287693204.

It is an arithmetic number, because the mean of its divisors is an integer number (16398506244).

Almost surely, 2^65018638679 is an apocalyptic number.

65018638679 is a deficient number, since it is larger than the sum of its proper divisors (575386297).

65018638679 is a wasteful number, since it uses less digits than its factorization.

65018638679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575386296.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 65018638679 in words is "sixty-five billion, eighteen million, six hundred thirty-eight thousand, six hundred seventy-nine".