65165741568 has 360 divisors, whose sum is σ = 205776490920. Its totient is φ = 20558499840.

The previous prime is 65165741567. The next prime is 65165741569. The reversal of 65165741568 is 86514756156.

65165741568 is a `hidden beast` number, since 6 + 5 + 1 + 6 + 5 + 74 + 1 + 568 = 666.

It is an interprime number because it is at equal distance from previous prime (65165741567) and next prime (65165741569).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65165741567) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 63824898 + ... + 63825918.

Almost surely, 2^65165741568 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 65165741568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102888245460).

65165741568 is an abundant number, since it is smaller than the sum of its proper divisors (140610749352).

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

65165741568 is an frugal number, since it uses more digits than its factorization.

65165741568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1045 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 65165741568 in words is "sixty-five billion, one hundred sixty-five million, seven hundred forty-one thousand, five hundred sixty-eight".