21626510124343 has 2 divisors, whose sum is σ = 21626510124344. Its totient is φ = 21626510124342.

The previous prime is 21626510124337. The next prime is 21626510124353. The reversal of 21626510124343 is 34342101562612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21626510124343 - 2²⁹ = 21625973253431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21626510124296 and 21626510124305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21626510124313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10813255062171 + 10813255062172.

It is an arithmetic number, because the mean of its divisors is an integer number (10813255062172).

Almost surely, 2^{21626510124343} is an apocalyptic number.

21626510124343 is a deficient number, since it is larger than the sum of its proper divisors (1).

21626510124343 is an equidigital number, since it uses as much as digits as its factorization.

21626510124343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 21626510124343 its reverse (34342101562612), we get a palindrome (55968611686955).

The spelling of 21626510124343 in words is "twenty-one trillion, six hundred twenty-six billion, five hundred ten million, one hundred twenty-four thousand, three hundred forty-three".