65712375121668 has 24 divisors (see below), whose sum is σ = 167267863946400. Its totient is φ = 19912840945920.

The previous prime is 65712375121667. The next prime is 65712375121711. The reversal of 65712375121668 is 86612157321756.

It is a super-2 number, since 2×65712375121668² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65712375121667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248910511693 + ... + 248910511956.

It is an arithmetic number, because the mean of its divisors is an integer number (6969494331100).

Almost surely, 2^{65712375121668} is an apocalyptic number.

It is an amenable number.

65712375121668 is an abundant number, since it is smaller than the sum of its proper divisors (101555488824732).

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

65712375121668 is a wasteful number, since it uses less digits than its factorization.

65712375121668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497821023667 (or 497821023665 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 60.

The spelling of 65712375121668 in words is "sixty-five trillion, seven hundred twelve billion, three hundred seventy-five million, one hundred twenty-one thousand, six hundred sixty-eight".