51302918841 has 4 divisors (see below), whose sum is σ = 68403891792. Its totient is φ = 34201945892.

The previous prime is 51302918831. The next prime is 51302918879. The reversal of 51302918841 is 14881920315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51302918841 - 2¹³ = 51302910649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51302918793 and 51302918802.

It is not an unprimeable number, because it can be changed into a prime (51302918831) 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, 8550486471 + ... + 8550486476.

It is an arithmetic number, because the mean of its divisors is an integer number (17100972948).

Almost surely, 2^51302918841 is an apocalyptic number.

It is an amenable number.

51302918841 is a deficient number, since it is larger than the sum of its proper divisors (17100972951).

51302918841 is a wasteful number, since it uses less digits than its factorization.

51302918841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17100972950.

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 51302918841 in words is "fifty-one billion, three hundred two million, nine hundred eighteen thousand, eight hundred forty-one".