51785816716612 has 24 divisors (see below), whose sum is σ = 98879418735552. Its totient is φ = 23535296450400.

The previous prime is 51785816716541. The next prime is 51785816716651. The reversal of 51785816716612 is 21661761858715.

It is a happy number.

51785816716612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92496439 + ... + 93054622.

It is an arithmetic number, because the mean of its divisors is an integer number (4119975780648).

Almost surely, 2^{51785816716612} is an apocalyptic number.

It is an amenable number.

51785816716612 is a deficient number, since it is larger than the sum of its proper divisors (47093602018940).

51785816716612 is a wasteful number, since it uses less digits than its factorization.

51785816716612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185557419 (or 185557417 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 64.

The spelling of 51785816716612 in words is "fifty-one trillion, seven hundred eighty-five billion, eight hundred sixteen million, seven hundred sixteen thousand, six hundred twelve".