5118621971 has 2 divisors, whose sum is σ = 5118621972. Its totient is φ = 5118621970.

The previous prime is 5118621941. The next prime is 5118621973. The reversal of 5118621971 is 1791268115.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5118621971 is a prime.

Together with 5118621973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5118621973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2559310985 + 2559310986.

It is an arithmetic number, because the mean of its divisors is an integer number (2559310986).

Almost surely, 2^5118621971 is an apocalyptic number.

5118621971 is a deficient number, since it is larger than the sum of its proper divisors (1).

5118621971 is an equidigital number, since it uses as much as digits as its factorization.

5118621971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 41.

The square root of 5118621971 is about 71544.5453616137. The cubic root of 5118621971 is about 1723.3931093237.

The spelling of 5118621971 in words is "five billion, one hundred eighteen million, six hundred twenty-one thousand, nine hundred seventy-one".