51459616443 has 8 divisors (see below), whose sum is σ = 68616116800. Its totient is φ = 34304763528.

The previous prime is 51459616367. The next prime is 51459616447. The reversal of 51459616443 is 34461695415.

It is a happy number.

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

It is not a de Polignac number, because 51459616443 - 2¹⁶ = 51459550907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51459616392 and 51459616401.

It is not an unprimeable number, because it can be changed into a prime (51459616447) 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, 337033 + ... + 465306.

It is an arithmetic number, because the mean of its divisors is an integer number (8577014600).

Almost surely, 2^51459616443 is an apocalyptic number.

51459616443 is a deficient number, since it is larger than the sum of its proper divisors (17156500357).

51459616443 is a wasteful number, since it uses less digits than its factorization.

51459616443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823721.

The product of its digits is 1555200, while the sum is 48.

The spelling of 51459616443 in words is "fifty-one billion, four hundred fifty-nine million, six hundred sixteen thousand, four hundred forty-three".