51778512941 has 16 divisors (see below), whose sum is σ = 54536890368. Its totient is φ = 49094553600.

The previous prime is 51778512937. The next prime is 51778512949. The reversal of 51778512941 is 14921587715.

It is a cyclic number.

It is not a de Polignac number, because 51778512941 - 2² = 51778512937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51778512941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51778512949) 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 15 ways as a sum of consecutive naturals, for example, 432716 + ... + 539258.

It is an arithmetic number, because the mean of its divisors is an integer number (3408555648).

Almost surely, 2^51778512941 is an apocalyptic number.

It is an amenable number.

51778512941 is a deficient number, since it is larger than the sum of its proper divisors (2758377427).

51778512941 is a wasteful number, since it uses less digits than its factorization.

51778512941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106892.

The product of its digits is 705600, while the sum is 50.

The spelling of 51778512941 in words is "fifty-one billion, seven hundred seventy-eight million, five hundred twelve thousand, nine hundred forty-one".