665552210315051 has 8 divisors (see below), whose sum is σ = 673580245525824. Its totient is φ = 657524397339720.

The previous prime is 665552210315023. The next prime is 665552210315063. The reversal of 665552210315051 is 150513012255566.

665552210315051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 665552210315051 - 2⁶ = 665552210314987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665552210314987 and 665552210315005.

It is not an unprimeable number, because it can be changed into a prime (665552210315651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49529201 + ... + 61516226.

It is an arithmetic number, because the mean of its divisors is an integer number (84197530690728).

Almost surely, 2^{665552210315051} is an apocalyptic number.

665552210315051 is a deficient number, since it is larger than the sum of its proper divisors (8028035210773).

665552210315051 is a wasteful number, since it uses less digits than its factorization.

665552210315051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111117721.

The product of its (nonzero) digits is 1350000, while the sum is 47.

The spelling of 665552210315051 in words is "six hundred sixty-five trillion, five hundred fifty-two billion, two hundred ten million, three hundred fifteen thousand, fifty-one".