7172942668 has 24 divisors (see below), whose sum is σ = 13451184432. Its totient is φ = 3334831104.

The previous prime is 7172942663. The next prime is 7172942671. The reversal of 7172942668 is 8662492717.

It is a super-2 number, since 2×7172942668² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7172942663) 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 7 ways as a sum of consecutive naturals, for example, 629805 + ... + 641092.

It is an arithmetic number, because the mean of its divisors is an integer number (560466018).

Almost surely, 2^7172942668 is an apocalyptic number.

It is an amenable number.

7172942668 is a deficient number, since it is larger than the sum of its proper divisors (6278241764).

7172942668 is a wasteful number, since it uses less digits than its factorization.

7172942668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271001 (or 1270999 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The square root of 7172942668 is about 84693.2268130103. The cubic root of 7172942668 is about 1928.5568841085.

The spelling of 7172942668 in words is "seven billion, one hundred seventy-two million, nine hundred forty-two thousand, six hundred sixty-eight".