51444451085 has 8 divisors (see below), whose sum is σ = 61736350200. Its totient is φ = 41153554944.

The previous prime is 51444451063. The next prime is 51444451171. The reversal of 51444451085 is 58015444415.

51444451085 = 160381² + 160382².

51444451085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 989857444 + 50454593641 = 31462^2 + 224621^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51444451085 - 2⁸ = 51444450829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132860 + ... + 347189.

It is an arithmetic number, because the mean of its divisors is an integer number (7717043775).

Almost surely, 2^51444451085 is an apocalyptic number.

51444451085 is the 160382-nd centered square number.

It is an amenable number.

51444451085 is a deficient number, since it is larger than the sum of its proper divisors (10291899115).

51444451085 is a wasteful number, since it uses less digits than its factorization.

51444451085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501487.

The product of its (nonzero) digits is 256000, while the sum is 41.

The spelling of 51444451085 in words is "fifty-one billion, four hundred forty-four million, four hundred fifty-one thousand, eighty-five".