7121688382 has 16 divisors (see below), whose sum is σ = 11352979440. Its totient is φ = 3338919808.

The previous prime is 7121688361. The next prime is 7121688391. The reversal of 7121688382 is 2838861217.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380188 + ... + 398479.

It is an arithmetic number, because the mean of its divisors is an integer number (709561215).

Almost surely, 2^7121688382 is an apocalyptic number.

7121688382 is a deficient number, since it is larger than the sum of its proper divisors (4231291058).

7121688382 is a wasteful number, since it uses less digits than its factorization.

7121688382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778955.

The product of its digits is 258048, while the sum is 46.

The square root of 7121688382 is about 84390.0964687208. The cubic root of 7121688382 is about 1923.9523962660.

The spelling of 7121688382 in words is "seven billion, one hundred twenty-one million, six hundred eighty-eight thousand, three hundred eighty-two".