51566000314440 has 128 divisors (see below), whose sum is σ = 156498315667200. Its totient is φ = 13591028183040.

The previous prime is 51566000314429. The next prime is 51566000314441. The reversal of 51566000314440 is 4441300066515.

It is not an unprimeable number, because it can be changed into a prime (51566000314441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25966669 + ... + 27881891.

It is an arithmetic number, because the mean of its divisors is an integer number (1222643091150).

Almost surely, 2^{51566000314440} 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 51566000314440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78249157833600).

51566000314440 is an abundant number, since it is smaller than the sum of its proper divisors (104932315352760).

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

51566000314440 is a wasteful number, since it uses less digits than its factorization.

51566000314440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917847 (or 1917843 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 51566000314440 in words is "fifty-one trillion, five hundred sixty-six billion, three hundred fourteen thousand, four hundred forty".