7720618052 has 12 divisors (see below), whose sum is σ = 15441236160. Its totient is φ = 3308836296.

The previous prime is 7720618039. The next prime is 7720618069. The reversal of 7720618052 is 2508160277.

7720618052 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 7720617997 and 7720618015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137868152 + ... + 137868207.

It is an arithmetic number, because the mean of its divisors is an integer number (1286769680).

Almost surely, 2^7720618052 is an apocalyptic number.

It is an amenable number.

7720618052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7720618052 is a wasteful number, since it uses less digits than its factorization.

7720618052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275736370 (or 275736368 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 7720618052 is about 87867.0475889568. The cubic root of 7720618052 is about 1976.4417653394.

The spelling of 7720618052 in words is "seven billion, seven hundred twenty million, six hundred eighteen thousand, fifty-two".