68228944873 has 24 divisors (see below), whose sum is σ = 72092021976. Its totient is φ = 64552051200.

The previous prime is 68228944871. The next prime is 68228944921. The reversal of 68228944873 is 37844982286.

It can be written as a sum of positive squares in 12 ways, for example, as 32088273424 + 36140671449 = 179132^2 + 190107^2 .

It is not a de Polignac number, because 68228944873 - 2¹ = 68228944871 is a prime.

It is a super-2 number, since 2×68228944873² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68228944871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14413215 + ... + 14417947.

It is an arithmetic number, because the mean of its divisors is an integer number (3003834249).

Almost surely, 2^68228944873 is an apocalyptic number.

It is an amenable number.

68228944873 is a deficient number, since it is larger than the sum of its proper divisors (3863077103).

68228944873 is a wasteful number, since it uses less digits than its factorization.

68228944873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133 (or 5104 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 61.

It can be divided in two parts, 68228 and 944873, that added together give a palindrome (1013101).

The spelling of 68228944873 in words is "sixty-eight billion, two hundred twenty-eight million, nine hundred forty-four thousand, eight hundred seventy-three".