65488053138 has 16 divisors (see below), whose sum is σ = 131402742240. Its totient is φ = 21758245056.

The previous prime is 65488053121. The next prime is 65488053181. The reversal of 65488053138 is 83135088456.

It is a happy number.

It is a Curzon 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, 17774503 + ... + 17778186.

It is an arithmetic number, because the mean of its divisors is an integer number (8212671390).

Almost surely, 2^65488053138 is an apocalyptic number.

65488053138 is an abundant number, since it is smaller than the sum of its proper divisors (65914689102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65488053138 is a wasteful number, since it uses less digits than its factorization.

65488053138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35553001.

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 65488053138 in words is "sixty-five billion, four hundred eighty-eight million, fifty-three thousand, one hundred thirty-eight".