65671722012316 has 48 divisors (see below), whose sum is σ = 133825951719936. Its totient is φ = 27613092147264.

The previous prime is 65671722012307. The next prime is 65671722012317. The reversal of 65671722012316 is 61321022717656.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65671722012316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65671722012317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46204735 + ... + 47604841.

It is an arithmetic number, because the mean of its divisors is an integer number (2788040660832).

Almost surely, 2^{65671722012316} is an apocalyptic number.

It is an amenable number.

65671722012316 is an abundant number, since it is smaller than the sum of its proper divisors (68154229707620).

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

65671722012316 is a wasteful number, since it uses less digits than its factorization.

65671722012316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431778 (or 1431776 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 65671722012316 in words is "sixty-five trillion, six hundred seventy-one billion, seven hundred twenty-two million, twelve thousand, three hundred sixteen".