10520405543 has 2 divisors, whose sum is σ = 10520405544. Its totient is φ = 10520405542.

The previous prime is 10520405503. The next prime is 10520405549. The reversal of 10520405543 is 34550402501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10520405543 - 2¹² = 10520401447 is a prime.

It is a super-2 number, since 2×10520405543² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10520405549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260202771 + 5260202772.

It is an arithmetic number, because the mean of its divisors is an integer number (5260202772).

Almost surely, 2^10520405543 is an apocalyptic number.

10520405543 is a deficient number, since it is larger than the sum of its proper divisors (1).

10520405543 is an equidigital number, since it uses as much as digits as its factorization.

10520405543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 10520405543 in words is "ten billion, five hundred twenty million, four hundred five thousand, five hundred forty-three".