51216222261214 has 16 divisors (see below), whose sum is σ = 81356487779376. Its totient is φ = 24097877296000.

The previous prime is 51216222261203. The next prime is 51216222261247. The reversal of 51216222261214 is 41216222261215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120859012 + ... + 121282039.

It is an arithmetic number, because the mean of its divisors is an integer number (5084780486211).

Almost surely, 2^{51216222261214} is an apocalyptic number.

51216222261214 is a deficient number, since it is larger than the sum of its proper divisors (30140265518162).

51216222261214 is a wasteful number, since it uses less digits than its factorization.

51216222261214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242147291.

The product of its digits is 46080, while the sum is 37.

Subtracting from 51216222261214 its reverse (41216222261215), we obtain a palindrome (9999999999999).

The spelling of 51216222261214 in words is "fifty-one trillion, two hundred sixteen billion, two hundred twenty-two million, two hundred sixty-one thousand, two hundred fourteen".