5121981143 has 2 divisors, whose sum is σ = 5121981144. Its totient is φ = 5121981142.

The previous prime is 5121981127. The next prime is 5121981167. The reversal of 5121981143 is 3411891215.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5121981143 - 2⁴ = 5121981127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5121981103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560990571 + 2560990572.

It is an arithmetic number, because the mean of its divisors is an integer number (2560990572).

Almost surely, 2^5121981143 is an apocalyptic number.

5121981143 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121981143 is an equidigital number, since it uses as much as digits as its factorization.

5121981143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 35.

The square root of 5121981143 is about 71568.0175986453. The cubic root of 5121981143 is about 1723.7700276923.

The spelling of 5121981143 in words is "five billion, one hundred twenty-one million, nine hundred eighty-one thousand, one hundred forty-three".