65815951360 has 192 divisors, whose sum is σ = 170118748800. Its totient is φ = 24357666816.

The previous prime is 65815951351. The next prime is 65815951391. The reversal of 65815951360 is 6315951856.

65815951360 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8362147 + ... + 8370013.

It is an arithmetic number, because the mean of its divisors is an integer number (886035150).

Almost surely, 2^65815951360 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 65815951360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85059374400).

65815951360 is an abundant number, since it is smaller than the sum of its proper divisors (104302797440).

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

65815951360 is a wasteful number, since it uses less digits than its factorization.

65815951360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7956 (or 7936 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 65815951360 in words is "sixty-five billion, eight hundred fifteen million, nine hundred fifty-one thousand, three hundred sixty".