65389888987 has 8 divisors (see below), whose sum is σ = 65510888576. Its totient is φ = 65268934272.

The previous prime is 65389888939. The next prime is 65389889041. The reversal of 65389888987 is 78988898356.

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 65389888987 - 2³¹ = 63242405339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65389888687) 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, 4567813 + ... + 4582105.

It is an arithmetic number, because the mean of its divisors is an integer number (8188861072).

Almost surely, 2^65389888987 is an apocalyptic number.

65389888987 is a deficient number, since it is larger than the sum of its proper divisors (120999589).

65389888987 is a wasteful number, since it uses less digits than its factorization.

65389888987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22437.

The product of its digits is 1672151040, while the sum is 79.

The spelling of 65389888987 in words is "sixty-five billion, three hundred eighty-nine million, eight hundred eighty-eight thousand, nine hundred eighty-seven".