66447714664115 has 16 divisors (see below), whose sum is σ = 79750591828320. Its totient is φ = 53149283066880.

The previous prime is 66447714664099. The next prime is 66447714664117. The reversal of 66447714664115 is 51146641774466.

It is not a de Polignac number, because 66447714664115 - 2⁴ = 66447714664099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66447714664117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874999427 + ... + 875075363.

It is an arithmetic number, because the mean of its divisors is an integer number (4984411989270).

Almost surely, 2^{66447714664115} is an apocalyptic number.

66447714664115 is a deficient number, since it is larger than the sum of its proper divisors (13302877164205).

66447714664115 is a wasteful number, since it uses less digits than its factorization.

66447714664115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102902.

The product of its digits is 81285120, while the sum is 62.

The spelling of 66447714664115 in words is "sixty-six trillion, four hundred forty-seven billion, seven hundred fourteen million, six hundred sixty-four thousand, one hundred fifteen".