5120566165 has 32 divisors (see below), whose sum is σ = 7236496512. Its totient is φ = 3429216000.

The previous prime is 5120566159. The next prime is 5120566181. The reversal of 5120566165 is 5616650215.

5120566165 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5120566165 - 2⁵ = 5120566133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292510 + ... + 309520.

It is an arithmetic number, because the mean of its divisors is an integer number (226140516).

Almost surely, 2^5120566165 is an apocalyptic number.

5120566165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5120566165 is a deficient number, since it is larger than the sum of its proper divisors (2115930347).

5120566165 is a wasteful number, since it uses less digits than its factorization.

5120566165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17461.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 5120566165 is about 71558.1313688389. The cubic root of 5120566165 is about 1723.6112791379.

It can be divided in two parts, 51205 and 66165, that added together give a triangular number (117370 = T₄₈₄).

The spelling of 5120566165 in words is "five billion, one hundred twenty million, five hundred sixty-six thousand, one hundred sixty-five".