65404131330 has 96 divisors (see below), whose sum is σ = 161453388096. Its totient is φ = 16947568512.

The previous prime is 65404131329. The next prime is 65404131343. The reversal of 65404131330 is 3313140456.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89227644 + ... + 89228376.

It is an arithmetic number, because the mean of its divisors is an integer number (1681806126).

Almost surely, 2^65404131330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65404131330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80726694048).

65404131330 is an abundant number, since it is smaller than the sum of its proper divisors (96049256766).

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

65404131330 is a wasteful number, since it uses less digits than its factorization.

65404131330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 65404131330 its reverse (3313140456), we get a palindrome (68717271786).

The spelling of 65404131330 in words is "sixty-five billion, four hundred four million, one hundred thirty-one thousand, three hundred thirty".