65445488918 has 4 divisors (see below), whose sum is σ = 98168233380. Its totient is φ = 32722744458.

The previous prime is 65445488909. The next prime is 65445488951. The reversal of 65445488918 is 81988454456.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×65445488918² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16361372228 + ... + 16361372231.

It is an arithmetic number, because the mean of its divisors is an integer number (24542058345).

Almost surely, 2^65445488918 is an apocalyptic number.

65445488918 is a deficient number, since it is larger than the sum of its proper divisors (32722744462).

65445488918 is a wasteful number, since it uses less digits than its factorization.

65445488918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32722744461.

The product of its digits is 44236800, while the sum is 62.

The spelling of 65445488918 in words is "sixty-five billion, four hundred forty-five million, four hundred eighty-eight thousand, nine hundred eighteen".