7773820452 has 60 divisors (see below), whose sum is σ = 21517747020. Its totient is φ = 2438843904.

The previous prime is 7773820399. The next prime is 7773820477. The reversal of 7773820452 is 2540283777.

It can be written as a sum of positive squares in 2 ways, for example, as 7301018916 + 472801536 = 85446^2 + 21744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7773820398 and 7773820407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 700177 + ... + 711192.

It is an arithmetic number, because the mean of its divisors is an integer number (358629117).

Almost surely, 2^7773820452 is an apocalyptic number.

It is an amenable number.

7773820452 is an abundant number, since it is smaller than the sum of its proper divisors (13743926568).

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

7773820452 is a wasteful number, since it uses less digits than its factorization.

7773820452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411402 (or 1411391 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The square root of 7773820452 is about 88169.2715859670. The cubic root of 7773820452 is about 1980.9712315017.

The spelling of 7773820452 in words is "seven billion, seven hundred seventy-three million, eight hundred twenty thousand, four hundred fifty-two".