7721082416 has 20 divisors (see below), whose sum is σ = 14967396192. Its totient is φ = 3858528576.

The previous prime is 7721082379. The next prime is 7721082437. The reversal of 7721082416 is 6142801277.

It is a super-2 number, since 2×7721082416² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7721082416.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93896 + ... + 155751.

Almost surely, 2^7721082416 is an apocalyptic number.

It is an amenable number.

7721082416 is a deficient number, since it is larger than the sum of its proper divisors (7246313776).

7721082416 is a wasteful number, since it uses less digits than its factorization.

7721082416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251588 (or 251582 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 7721082416 is about 87869.6899732780. The cubic root of 7721082416 is about 1976.4813895421.

The spelling of 7721082416 in words is "seven billion, seven hundred twenty-one million, eighty-two thousand, four hundred sixteen".