5118743335421 has 2 divisors, whose sum is σ = 5118743335422. Its totient is φ = 5118743335420.

The previous prime is 5118743335393. The next prime is 5118743335571. The reversal of 5118743335421 is 1245333478115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4645964702500 + 472778632921 = 2155450^2 + 687589^2 .

It is a cyclic number.

It is not a de Polignac number, because 5118743335421 - 2²⁶ = 5118676226557 is a prime.

It is a super-2 number, since 2×5118743335421² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5118743835421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2559371667710 + 2559371667711.

It is an arithmetic number, because the mean of its divisors is an integer number (2559371667711).

Almost surely, 2^{5118743335421} is an apocalyptic number.

It is an amenable number.

5118743335421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5118743335421 is an equidigital number, since it uses as much as digits as its factorization.

5118743335421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The spelling of 5118743335421 in words is "five trillion, one hundred eighteen billion, seven hundred forty-three million, three hundred thirty-five thousand, four hundred twenty-one".