652218615944 has 128 divisors (see below), whose sum is σ = 1536501657600. Its totient is φ = 253071371520.

The previous prime is 652218615911. The next prime is 652218615947. The reversal of 652218615944 is 449516812256.

It is a super-2 number, since 2×652218615944² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (652218615947) 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 31 ways as a sum of consecutive naturals, for example, 28890149 + ... + 28912715.

It is an arithmetic number, because the mean of its divisors is an integer number (12003919200).

Almost surely, 2^652218615944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 652218615944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (768250828800).

652218615944 is an abundant number, since it is smaller than the sum of its proper divisors (884283041656).

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

652218615944 is a wasteful number, since it uses less digits than its factorization.

652218615944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23803 (or 23799 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 53.

The spelling of 652218615944 in words is "six hundred fifty-two billion, two hundred eighteen million, six hundred fifteen thousand, nine hundred forty-four".