7821472832 has 14 divisors (see below), whose sum is σ = 15520735278. Its totient is φ = 3910736384.

The previous prime is 7821472823. The next prime is 7821472843. The reversal of 7821472832 is 2382741287.

It can be written as a sum of positive squares in only one way, i.e., 7455286336 + 366186496 = 86344^2 + 19136^2 .

It is a super-2 number, since 2×7821472832² (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, 61105193 + ... + 61105320.

Almost surely, 2^7821472832 is an apocalyptic number.

It is an amenable number.

7821472832 is a deficient number, since it is larger than the sum of its proper divisors (7699262446).

7821472832 is a wasteful number, since it uses less digits than its factorization.

7821472832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122210525 (or 122210515 counting only the distinct ones).

The product of its digits is 301056, while the sum is 44.

The square root of 7821472832 is about 88439.0910853340. The cubic root of 7821472832 is about 1985.0106767440.

The spelling of 7821472832 in words is "seven billion, eight hundred twenty-one million, four hundred seventy-two thousand, eight hundred thirty-two".