66078266287066 has 8 divisors (see below), whose sum is σ = 108128072106144. Its totient is φ = 30035575585020.

The previous prime is 66078266287049. The next prime is 66078266287073.

66078266287066 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 66078266286986 and 66078266287004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501778779230 + ... + 1501778779273.

It is an arithmetic number, because the mean of its divisors is an integer number (13516009013268).

Almost surely, 2^{66078266287066} is an apocalyptic number.

66078266287066 is a deficient number, since it is larger than the sum of its proper divisors (42049805819078).

66078266287066 is a wasteful number, since it uses less digits than its factorization.

66078266287066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003557558516.

The product of its (nonzero) digits is 585252864, while the sum is 70.

The spelling of 66078266287066 in words is "sixty-six trillion, seventy-eight billion, two hundred sixty-six million, two hundred eighty-seven thousand, sixty-six".