65418019832 has 48 divisors (see below), whose sum is σ = 135501198000. Its totient is φ = 29585952000.

The previous prime is 65418019829. The next prime is 65418019873. The reversal of 65418019832 is 23891081456.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22832 + ... + 362432.

It is an arithmetic number, because the mean of its divisors is an integer number (2822941625).

Almost surely, 2^65418019832 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 65418019832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67750599000).

65418019832 is an abundant number, since it is smaller than the sum of its proper divisors (70083178168).

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

65418019832 is a wasteful number, since it uses less digits than its factorization.

65418019832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339828 (or 339813 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 65418019832 in words is "sixty-five billion, four hundred eighteen million, nineteen thousand, eight hundred thirty-two".