66274447266 has 64 divisors (see below), whose sum is σ = 157913971200. Its totient is φ = 20528771328.

The previous prime is 66274447259. The next prime is 66274447277.

66274447266 is a `hidden beast` number, since 6 + 627 + 4 + 4 + 4 + 7 + 2 + 6 + 6 = 666.

66274447266 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384405 + ... + 529448.

It is an arithmetic number, because the mean of its divisors is an integer number (2467405800).

Almost surely, 2^66274447266 is an apocalyptic number.

66274447266 is an abundant number, since it is smaller than the sum of its proper divisors (91639523934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66274447266 is a wasteful number, since it uses less digits than its factorization.

66274447266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913960 (or 913954 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 54.

The spelling of 66274447266 in words is "sixty-six billion, two hundred seventy-four million, four hundred forty-seven thousand, two hundred sixty-six".