7784082816 has 32 divisors (see below), whose sum is σ = 20676471000. Its totient is φ = 2594694144.

The previous prime is 7784082721. The next prime is 7784082833. The reversal of 7784082816 is 6182804877.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×7784082816³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

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, 10135141 + ... + 10135908.

Almost surely, 2^7784082816 is an apocalyptic number.

It is an amenable number.

7784082816 is an abundant number, since it is smaller than the sum of its proper divisors (12892388184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7784082816 is a wasteful number, since it uses less digits than its factorization.

7784082816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20271066 (or 20271054 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 51.

The square root of 7784082816 is about 88227.4493340933. The cubic root of 7784082816 is about 1981.8425537716.

The spelling of 7784082816 in words is "seven billion, seven hundred eighty-four million, eighty-two thousand, eight hundred sixteen".