7718142244 has 24 divisors (see below), whose sum is σ = 13977646200. Its totient is φ = 3724627200.

The previous prime is 7718142241. The next prime is 7718142253. The reversal of 7718142244 is 4422418177.

It can be written as a sum of positive squares in 4 ways, for example, as 44382244 + 7673760000 = 6662^2 + 87600^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7718142197 and 7718142206.

It is not an unprimeable number, because it can be changed into a prime (7718142241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349944 + ... + 371344.

It is an arithmetic number, because the mean of its divisors is an integer number (582401925).

Almost surely, 2^7718142244 is an apocalyptic number.

It is an amenable number.

7718142244 is a deficient number, since it is larger than the sum of its proper divisors (6259503956).

7718142244 is a wasteful number, since it uses less digits than its factorization.

7718142244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24543 (or 24541 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 7718142244 is about 87852.9580833793. The cubic root of 7718142244 is about 1976.2304777004.

The spelling of 7718142244 in words is "seven billion, seven hundred eighteen million, one hundred forty-two thousand, two hundred forty-four".