5051212749991 has 2 divisors, whose sum is σ = 5051212749992. Its totient is φ = 5051212749990.

The previous prime is 5051212749953. The next prime is 5051212749997. The reversal of 5051212749991 is 1999472121505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5051212749991 - 2¹⁵ = 5051212717223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5051212749997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525606374995 + 2525606374996.

It is an arithmetic number, because the mean of its divisors is an integer number (2525606374996).

Almost surely, 2^{5051212749991} is an apocalyptic number.

5051212749991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5051212749991 is an equidigital number, since it uses as much as digits as its factorization.

5051212749991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2041200, while the sum is 55.

The spelling of 5051212749991 in words is "five trillion, fifty-one billion, two hundred twelve million, seven hundred forty-nine thousand, nine hundred ninety-one".