5137716121 has 4 divisors (see below), whose sum is σ = 5138348544. Its totient is φ = 5137083700.

The previous prime is 5137716107. The next prime is 5137716161. The reversal of 5137716121 is 1216177315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1216177315 = 5 ⋅243235463.

It is a cyclic number.

It is not a de Polignac number, because 5137716121 - 2²⁹ = 4600845209 is a prime.

It is a super-2 number, since 2×5137716121² = 52792253879966573282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5137716161) 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 in 3 ways as a sum of consecutive naturals, for example, 303865 + ... + 320326.

It is an arithmetic number, because the mean of its divisors is an integer number (1284587136).

Almost surely, 2^5137716121 is an apocalyptic number.

It is an amenable number.

5137716121 is a deficient number, since it is larger than the sum of its proper divisors (632423).

5137716121 is an equidigital number, since it uses as much as digits as its factorization.

5137716121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632422.

The product of its digits is 8820, while the sum is 34.

The square root of 5137716121 is about 71677.8635354040. The cubic root of 5137716121 is about 1725.5333919792.

The spelling of 5137716121 in words is "five billion, one hundred thirty-seven million, seven hundred sixteen thousand, one hundred twenty-one".