65719047168 has 352 divisors, whose sum is σ = 211702377600. Its totient is φ = 20055195648.

The previous prime is 65719047143. The next prime is 65719047179. The reversal of 65719047168 is 86174091756.

65719047168 is a `hidden beast` number, since 6 + 571 + 9 + 0 + 4 + 7 + 1 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17388703 + ... + 17392481.

Almost surely, 2^65719047168 is an apocalyptic number.

65719047168 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65719047168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105851188800).

65719047168 is an abundant number, since it is smaller than the sum of its proper divisors (145983330432).

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

65719047168 is a wasteful number, since it uses less digits than its factorization.

65719047168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862 (or 3838 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 65719047168 in words is "sixty-five billion, seven hundred nineteen million, forty-seven thousand, one hundred sixty-eight".