51809882443 has 8 divisors (see below), whose sum is σ = 56522940480. Its totient is φ = 47097335880.

The previous prime is 51809882437. The next prime is 51809882473. The reversal of 51809882443 is 34428890815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51809882443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51809882473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101896 + ... + 337642.

It is an arithmetic number, because the mean of its divisors is an integer number (7065367560).

Almost surely, 2^51809882443 is an apocalyptic number.

51809882443 is a deficient number, since it is larger than the sum of its proper divisors (4713058037).

51809882443 is a wasteful number, since it uses less digits than its factorization.

51809882443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255737.

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 51809882443 in words is "fifty-one billion, eight hundred nine million, eight hundred eighty-two thousand, four hundred forty-three".