7421664716 has 6 divisors (see below), whose sum is σ = 12987913260. Its totient is φ = 3710832356.

The previous prime is 7421664707. The next prime is 7421664751. The reversal of 7421664716 is 6174661247.

It is a super-2 number, since 2×7421664716² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927708086 + ... + 927708093.

It is an arithmetic number, because the mean of its divisors is an integer number (2164652210).

Almost surely, 2^7421664716 is an apocalyptic number.

It is an amenable number.

7421664716 is a deficient number, since it is larger than the sum of its proper divisors (5566248544).

7421664716 is a wasteful number, since it uses less digits than its factorization.

7421664716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855416183 (or 1855416181 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 7421664716 is about 86149.0842435368. The cubic root of 7421664716 is about 1950.5950159660.

The spelling of 7421664716 in words is "seven billion, four hundred twenty-one million, six hundred sixty-four thousand, seven hundred sixteen".