51666084633628 has 24 divisors (see below), whose sum is σ = 91690985232000. Its totient is φ = 25468675181040.

The previous prime is 51666084633589. The next prime is 51666084633661. The reversal of 51666084633628 is 82633648066615.

It is a super-2 number, since 2×51666084633628² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51666084633628.

It is a congruent 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, 12220075 + ... + 15895357.

It is an arithmetic number, because the mean of its divisors is an integer number (3820457718000).

Almost surely, 2^{51666084633628} is an apocalyptic number.

It is an amenable number.

51666084633628 is a deficient number, since it is larger than the sum of its proper divisors (40024900598372).

51666084633628 is a wasteful number, since it uses less digits than its factorization.

51666084633628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724857 (or 3724855 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 64.

The spelling of 51666084633628 in words is "fifty-one trillion, six hundred sixty-six billion, eighty-four million, six hundred thirty-three thousand, six hundred twenty-eight".