526541116421 has 2 divisors, whose sum is σ = 526541116422. Its totient is φ = 526541116420.

The previous prime is 526541116397. The next prime is 526541116429. The reversal of 526541116421 is 124611145625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450293339521 + 76247776900 = 671039^2 + 276130^2 .

It is a cyclic number.

It is not a de Polignac number, because 526541116421 - 2¹⁴ = 526541100037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (526541116429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263270558210 + 263270558211.

It is an arithmetic number, because the mean of its divisors is an integer number (263270558211).

Almost surely, 2^526541116421 is an apocalyptic number.

It is an amenable number.

526541116421 is a deficient number, since it is larger than the sum of its proper divisors (1).

526541116421 is an equidigital number, since it uses as much as digits as its factorization.

526541116421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 38.

The spelling of 526541116421 in words is "five hundred twenty-six billion, five hundred forty-one million, one hundred sixteen thousand, four hundred twenty-one".