51441442123 has 4 divisors (see below), whose sum is σ = 51816927240. Its totient is φ = 51065957008.

The previous prime is 51441442121. The next prime is 51441442141. The reversal of 51441442123 is 32124414415.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51441442123 - 2¹ = 51441442121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51441442121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187742353 + ... + 187742626.

It is an arithmetic number, because the mean of its divisors is an integer number (12954231810).

Almost surely, 2^51441442123 is an apocalyptic number.

51441442123 is a deficient number, since it is larger than the sum of its proper divisors (375485117).

51441442123 is a wasteful number, since it uses less digits than its factorization.

51441442123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375485116.

The product of its digits is 15360, while the sum is 31.

Adding to 51441442123 its reverse (32124414415), we get a palindrome (83565856538).

The spelling of 51441442123 in words is "fifty-one billion, four hundred forty-one million, four hundred forty-two thousand, one hundred twenty-three".