5071499681 has 2 divisors, whose sum is σ = 5071499682. Its totient is φ = 5071499680.

The previous prime is 5071499663. The next prime is 5071499689. The reversal of 5071499681 is 1869941705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4487794081 + 583705600 = 66991^2 + 24160^2 .

It is a cyclic number.

It is not a de Polignac number, because 5071499681 - 2¹⁴ = 5071483297 is a prime.

It is a super-2 number, since 2×5071499681² = 51440218028766203522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5071499689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2535749840 + 2535749841.

It is an arithmetic number, because the mean of its divisors is an integer number (2535749841).

Almost surely, 2^5071499681 is an apocalyptic number.

It is an amenable number.

5071499681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5071499681 is an equidigital number, since it uses as much as digits as its factorization.

5071499681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 5071499681 is about 71214.4625831018. The cubic root of 5071499681 is about 1718.0882491961.

The spelling of 5071499681 in words is "five billion, seventy-one million, four hundred ninety-nine thousand, six hundred eighty-one".