7752855656 has 48 divisors (see below), whose sum is σ = 18210703140. Its totient is φ = 3067061760.

The previous prime is 7752855653. The next prime is 7752855683. The reversal of 7752855656 is 6565582577.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7702870756 + 49984900 = 87766^2 + 7070^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (7752855653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 755585 + ... + 765776.

Almost surely, 2^7752855656 is an apocalyptic number.

It is an amenable number.

7752855656 is an abundant number, since it is smaller than the sum of its proper divisors (10457847484).

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

7752855656 is a wasteful number, since it uses less digits than its factorization.

7752855656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521394 (or 1521383 counting only the distinct ones).

The product of its digits is 17640000, while the sum is 56.

The square root of 7752855656 is about 88050.3018507035. The cubic root of 7752855656 is about 1979.1888368618.

The spelling of 7752855656 in words is "seven billion, seven hundred fifty-two million, eight hundred fifty-five thousand, six hundred fifty-six".