7788264656 has 10 divisors (see below), whose sum is σ = 15089762802. Its totient is φ = 3894132320.

The previous prime is 7788264613. The next prime is 7788264667. The reversal of 7788264656 is 6564628877.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6380814400 + 1407450256 = 79880^2 + 37516^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7788264595 and 7788264604.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 243383255 + ... + 243383286.

Almost surely, 2^7788264656 is an apocalyptic number.

It is an amenable number.

7788264656 is a deficient number, since it is larger than the sum of its proper divisors (7301498146).

7788264656 is a wasteful number, since it uses less digits than its factorization.

7788264656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486766549 (or 486766543 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 59.

The square root of 7788264656 is about 88251.1453523409. The cubic root of 7788264656 is about 1982.1973917558.

The spelling of 7788264656 in words is "seven billion, seven hundred eighty-eight million, two hundred sixty-four thousand, six hundred fifty-six".