65342375644 has 72 divisors (see below), whose sum is σ = 143101637280. Its totient is φ = 25559119872.

The previous prime is 65342375627. The next prime is 65342375647. The reversal of 65342375644 is 44657324356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65342375647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 343572 + ... + 498724.

It is an arithmetic number, because the mean of its divisors is an integer number (1987522740).

Almost surely, 2^65342375644 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 65342375644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71550818640).

65342375644 is an abundant number, since it is smaller than the sum of its proper divisors (77759261636).

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

65342375644 is a wasteful number, since it uses less digits than its factorization.

65342375644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155279 (or 155264 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 49.

The spelling of 65342375644 in words is "sixty-five billion, three hundred forty-two million, three hundred seventy-five thousand, six hundred forty-four".