66276237964165 has 16 divisors (see below), whose sum is σ = 79605400197888. Its totient is φ = 52971726338496.

The previous prime is 66276237964063. The next prime is 66276237964187. The reversal of 66276237964165 is 56146973267266.

It is a cyclic number.

It is not a de Polignac number, because 66276237964165 - 2¹³ = 66276237955973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66276237964094 and 66276237964103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42229087 + ... + 43770403.

It is an arithmetic number, because the mean of its divisors is an integer number (4975337512368).

Almost surely, 2^{66276237964165} is an apocalyptic number.

It is an amenable number.

66276237964165 is a deficient number, since it is larger than the sum of its proper divisors (13329162233723).

66276237964165 is a wasteful number, since it uses less digits than its factorization.

66276237964165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549308.

The product of its digits is 823011840, while the sum is 70.

The spelling of 66276237964165 in words is "sixty-six trillion, two hundred seventy-six billion, two hundred thirty-seven million, nine hundred sixty-four thousand, one hundred sixty-five".