7761647052 has 18 divisors (see below), whose sum is σ = 19619719028. Its totient is φ = 2587215672.

The previous prime is 7761647009. The next prime is 7761647081. The reversal of 7761647052 is 2507461677.

7761647052 is a `hidden beast` number, since 77 + 61 + 6 + 470 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 7761646989 and 7761647007.

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 5 ways as a sum of consecutive naturals, for example, 107800618 + ... + 107800689.

Almost surely, 2^7761647052 is an apocalyptic number.

It is an amenable number.

7761647052 is an abundant number, since it is smaller than the sum of its proper divisors (11858071976).

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

7761647052 is a wasteful number, since it uses less digits than its factorization.

7761647052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215601317 (or 215601312 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The square root of 7761647052 is about 88100.2102835175. The cubic root of 7761647052 is about 1979.9366585185.

The spelling of 7761647052 in words is "seven billion, seven hundred sixty-one million, six hundred forty-seven thousand, fifty-two".