66651010666051 has 8 divisors (see below), whose sum is σ = 76172707550720. Its totient is φ = 57129344764488.

The previous prime is 66651010666033. The next prime is 66651010666129. The reversal of 66651010666051 is 15066601015666.

66651010666051 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 a cyclic number.

It is not a de Polignac number, because 66651010666051 - 2⁹ = 66651010665539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66651010665986 and 66651010666004.

It is not an unprimeable number, because it can be changed into a prime (66651010666151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2937021 + ... + 11913358.

It is an arithmetic number, because the mean of its divisors is an integer number (9521588443840).

Almost surely, 2^{66651010666051} is an apocalyptic number.

66651010666051 is a deficient number, since it is larger than the sum of its proper divisors (9521696884669).

66651010666051 is a wasteful number, since it uses less digits than its factorization.

66651010666051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15491553.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 66651010666051 in words is "sixty-six trillion, six hundred fifty-one billion, ten million, six hundred sixty-six thousand, fifty-one".