51212293219 has 2 divisors, whose sum is σ = 51212293220. Its totient is φ = 51212293218.

The previous prime is 51212293141. The next prime is 51212293247. The reversal of 51212293219 is 91239221215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51212293219 - 2²¹ = 51210196067 is a prime.

It is a super-2 number, since 2×51212293219² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51212293519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25606146609 + 25606146610.

It is an arithmetic number, because the mean of its divisors is an integer number (25606146610).

Almost surely, 2^51212293219 is an apocalyptic number.

51212293219 is a deficient number, since it is larger than the sum of its proper divisors (1).

51212293219 is an equidigital number, since it uses as much as digits as its factorization.

51212293219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The spelling of 51212293219 in words is "fifty-one billion, two hundred twelve million, two hundred ninety-three thousand, two hundred nineteen".