51044756047 has 4 divisors (see below), whose sum is σ = 51256560256. Its totient is φ = 50832951840.

The previous prime is 51044755999. The next prime is 51044756101. The reversal of 51044756047 is 74065744015.

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 51044756047 - 2¹⁹ = 51044231759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51044755994 and 51044756012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51044756947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105901743 + ... + 105902224.

It is an arithmetic number, because the mean of its divisors is an integer number (12814140064).

Almost surely, 2^51044756047 is an apocalyptic number.

51044756047 is a deficient number, since it is larger than the sum of its proper divisors (211804209).

51044756047 is a wasteful number, since it uses less digits than its factorization.

51044756047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211804208.

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 51044756047 in words is "fifty-one billion, forty-four million, seven hundred fifty-six thousand, forty-seven".