65946126911473 has 4 divisors (see below), whose sum is σ = 69825310847460. Its totient is φ = 62066942975488.

The previous prime is 65946126911443. The next prime is 65946126911477. The reversal of 65946126911473 is 37411962164956.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22161808462689 + 43784318448784 = 4707633^2 + 6616972^2 .

It is a cyclic number.

It is not a de Polignac number, because 65946126911473 - 2⁴⁵ = 30761754822641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65946126911477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1939591967968 + ... + 1939591968001.

It is an arithmetic number, because the mean of its divisors is an integer number (17456327711865).

Almost surely, 2^{65946126911473} is an apocalyptic number.

It is an amenable number.

65946126911473 is a deficient number, since it is larger than the sum of its proper divisors (3879183935987).

65946126911473 is a wasteful number, since it uses less digits than its factorization.

65946126911473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3879183935986.

The product of its digits is 58786560, while the sum is 64.

The spelling of 65946126911473 in words is "sixty-five trillion, nine hundred forty-six billion, one hundred twenty-six million, nine hundred eleven thousand, four hundred seventy-three".