66150510115 has 4 divisors (see below), whose sum is σ = 79380612144. Its totient is φ = 52920408088.

The previous prime is 66150510089. The next prime is 66150510131. The reversal of 66150510115 is 51101505166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66150510115 - 2¹⁹ = 66149985827 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6615051007 + ... + 6615051016.

It is an arithmetic number, because the mean of its divisors is an integer number (19845153036).

Almost surely, 2^66150510115 is an apocalyptic number.

66150510115 is a deficient number, since it is larger than the sum of its proper divisors (13230102029).

66150510115 is a wasteful number, since it uses less digits than its factorization.

66150510115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13230102028.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 66150510115 in words is "sixty-six billion, one hundred fifty million, five hundred ten thousand, one hundred fifteen".