65144883744 has 120 divisors (see below), whose sum is σ = 191669662800. Its totient is φ = 21705853824.

The previous prime is 65144883703. The next prime is 65144883751. The reversal of 65144883744 is 44738844156.

65144883744 is a `hidden beast` number, since 6 + 51 + 448 + 83 + 74 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9439207 + ... + 9446105.

It is an arithmetic number, because the mean of its divisors is an integer number (1597247190).

Almost surely, 2^65144883744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65144883744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95834831400).

65144883744 is an abundant number, since it is smaller than the sum of its proper divisors (126524779056).

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

65144883744 is a wasteful number, since it uses less digits than its factorization.

65144883744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10564 (or 10547 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 54.

The spelling of 65144883744 in words is "sixty-five billion, one hundred forty-four million, eight hundred eighty-three thousand, seven hundred forty-four".