5072117436821 has 2 divisors, whose sum is σ = 5072117436822. Its totient is φ = 5072117436820.

The previous prime is 5072117436787. The next prime is 5072117436829. The reversal of 5072117436821 is 1286347112705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4091841208900 + 980276227921 = 2022830^2 + 990089^2 .

It is a cyclic number.

It is not a de Polignac number, because 5072117436821 - 2³⁴ = 5054937567637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5072117436829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2536058718410 + 2536058718411.

It is an arithmetic number, because the mean of its divisors is an integer number (2536058718411).

Almost surely, 2^{5072117436821} is an apocalyptic number.

It is an amenable number.

5072117436821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5072117436821 is an equidigital number, since it uses as much as digits as its factorization.

5072117436821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 5072117436821 in words is "five trillion, seventy-two billion, one hundred seventeen million, four hundred thirty-six thousand, eight hundred twenty-one".