5216565197944 has 8 divisors (see below), whose sum is σ = 9781059746160. Its totient is φ = 2608282598968.

The previous prime is 5216565197897. The next prime is 5216565197947. The reversal of 5216565197944 is 4497915656125.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×5216565197944³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5216565197947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326035324864 + ... + 326035324879.

It is an arithmetic number, because the mean of its divisors is an integer number (1222632468270).

Almost surely, 2^{5216565197944} is an apocalyptic number.

It is an amenable number.

5216565197944 is a deficient number, since it is larger than the sum of its proper divisors (4564494548216).

5216565197944 is a wasteful number, since it uses less digits than its factorization.

5216565197944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652070649749 (or 652070649745 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 64.

The spelling of 5216565197944 in words is "five trillion, two hundred sixteen billion, five hundred sixty-five million, one hundred ninety-seven thousand, nine hundred forty-four".