5020015991 has 2 divisors, whose sum is σ = 5020015992. Its totient is φ = 5020015990.

The previous prime is 5020015981. The next prime is 5020015993. The reversal of 5020015991 is 1995100205.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5020015991 - 2⁶ = 5020015927 is a prime.

It is a Sophie Germain prime.

Together with 5020015993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5020015993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510007995 + 2510007996.

It is an arithmetic number, because the mean of its divisors is an integer number (2510007996).

Almost surely, 2^5020015991 is an apocalyptic number.

5020015991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5020015991 is an equidigital number, since it uses as much as digits as its factorization.

5020015991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 5020015991 is about 70852.0711835582. The cubic root of 5020015991 is about 1712.2546994872.

The spelling of 5020015991 in words is "five billion, twenty million, fifteen thousand, nine hundred ninety-one".