51000004311 has 8 divisors (see below), whose sum is σ = 68352338160. Its totient is φ = 33823836672.

The previous prime is 51000004309. The next prime is 51000004313. The reversal of 51000004311 is 11340000015.

It is an interprime number because it is at equal distance from previous prime (51000004309) and next prime (51000004313).

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

It is not a de Polignac number, because 51000004311 - 2¹ = 51000004309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000004313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44040876 + ... + 44042033.

It is an arithmetic number, because the mean of its divisors is an integer number (8544042270).

Almost surely, 2^51000004311 is an apocalyptic number.

51000004311 is a deficient number, since it is larger than the sum of its proper divisors (17352333849).

51000004311 is a wasteful number, since it uses less digits than its factorization.

51000004311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88083105.

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 51000004311 its reverse (11340000015), we get a palindrome (62340004326).

The spelling of 51000004311 in words is "fifty-one billion, four thousand, three hundred eleven".