65347723512 has 256 divisors, whose sum is σ = 199090483200. Its totient is φ = 19778734080.

The previous prime is 65347723501. The next prime is 65347723547. The reversal of 65347723512 is 21532774356.

65347723512 is a `hidden beast` number, since 6 + 534 + 7 + 72 + 35 + 12 = 666.

65347723512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65347723512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12250798 + ... + 12256130.

It is an arithmetic number, because the mean of its divisors is an integer number (777697200).

Almost surely, 2^65347723512 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 65347723512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99545241600).

65347723512 is an abundant number, since it is smaller than the sum of its proper divisors (133742759688).

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

65347723512 is a wasteful number, since it uses less digits than its factorization.

65347723512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5483 (or 5473 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The spelling of 65347723512 in words is "sixty-five billion, three hundred forty-seven million, seven hundred twenty-three thousand, five hundred twelve".