51983326641856 has 112 divisors (see below), whose sum is σ = 107035772313600. Its totient is φ = 25022449013760.

The previous prime is 51983326641751. The next prime is 51983326641859. The reversal of 51983326641856 is 65814662338915.

It is a super-2 number, since 2×51983326641856² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51983326641791 and 51983326641800.

It is not an unprimeable number, because it can be changed into a prime (51983326641859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4187807106 + ... + 4187819518.

Almost surely, 2^{51983326641856} 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 51983326641856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53517886156800).

51983326641856 is an abundant number, since it is smaller than the sum of its proper divisors (55052445671744).

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

51983326641856 is a wasteful number, since it uses less digits than its factorization.

51983326641856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23262 (or 23252 counting only the distinct ones).

The product of its digits is 223948800, while the sum is 67.

The spelling of 51983326641856 in words is "fifty-one trillion, nine hundred eighty-three billion, three hundred twenty-six million, six hundred forty-one thousand, eight hundred fifty-six".