65974340212 has 24 divisors (see below), whose sum is σ = 129355097760. Its totient is φ = 29177840160.

The previous prime is 65974340171. The next prime is 65974340219. The reversal of 65974340212 is 21204347956.

It is a super-2 number, since 2×65974340212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65974340219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20260762 + ... + 20264017.

It is an arithmetic number, because the mean of its divisors is an integer number (5389795740).

Almost surely, 2^65974340212 is an apocalyptic number.

It is an amenable number.

65974340212 is a deficient number, since it is larger than the sum of its proper divisors (63380757548).

65974340212 is a wasteful number, since it uses less digits than its factorization.

65974340212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40524831 (or 40524829 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 65974340212 in words is "sixty-five billion, nine hundred seventy-four million, three hundred forty thousand, two hundred twelve".