51870808069056 has 168 divisors, whose sum is σ = 150943609016928. Its totient is φ = 17027383296000.

The previous prime is 51870808069049. The next prime is 51870808069063. The reversal of 51870808069056 is 65096080807815.

51870808069056 is a `hidden beast` number, since 518 + 7 + 0 + 8 + 0 + 8 + 0 + 69 + 0 + 56 = 666.

51870808069056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51870808069049) and next prime (51870808069063).

It is a super-2 number, since 2×51870808069056² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51870808068984 and 51870808069002.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 35309536 + ... + 36749216.

It is an arithmetic number, because the mean of its divisors is an integer number (898473863196).

Almost surely, 2^{51870808069056} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51870808069056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75471804508464).

51870808069056 is an abundant number, since it is smaller than the sum of its proper divisors (99072800947872).

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

51870808069056 is a wasteful number, since it uses less digits than its factorization.

51870808069056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440651 (or 1440638 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 63.

The spelling of 51870808069056 in words is "fifty-one trillion, eight hundred seventy billion, eight hundred eight million, sixty-nine thousand, fifty-six".