51665285570144 has 12 divisors (see below), whose sum is σ = 101716030966284. Its totient is φ = 25832642785056.

The previous prime is 51665285570141. The next prime is 51665285570149. The reversal of 51665285570144 is 44107558256615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51665285570141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807270087002 + ... + 807270087065.

It is an arithmetic number, because the mean of its divisors is an integer number (8476335913857).

Almost surely, 2^{51665285570144} is an apocalyptic number.

It is an amenable number.

51665285570144 is a deficient number, since it is larger than the sum of its proper divisors (50050745396140).

51665285570144 is a wasteful number, since it uses less digits than its factorization.

51665285570144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614540174077 (or 1614540174069 counting only the distinct ones).

The product of its (nonzero) digits is 40320000, while the sum is 59.

The spelling of 51665285570144 in words is "fifty-one trillion, six hundred sixty-five billion, two hundred eighty-five million, five hundred seventy thousand, one hundred forty-four".