66207710376044 has 24 divisors (see below), whose sum is σ = 120094773496320. Its totient is φ = 31915942944336.

The previous prime is 66207710376037. The next prime is 66207710376127. The reversal of 66207710376044 is 44067301770266.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2628111824 + ... + 2628137015.

It is an arithmetic number, because the mean of its divisors is an integer number (5003948895680).

Almost surely, 2^{66207710376044} is an apocalyptic number.

It is an amenable number.

66207710376044 is a deficient number, since it is larger than the sum of its proper divisors (53887063120276).

66207710376044 is a wasteful number, since it uses less digits than its factorization.

66207710376044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5256248957 (or 5256248955 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 53.

The spelling of 66207710376044 in words is "sixty-six trillion, two hundred seven billion, seven hundred ten million, three hundred seventy-six thousand, forty-four".