125791567543 has 2 divisors, whose sum is σ = 125791567544. Its totient is φ = 125791567542.

The previous prime is 125791567529. The next prime is 125791567567. The reversal of 125791567543 is 345765197521.

It is a weak prime.

It is an emirp because it is prime and its reverse (345765197521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125791567543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125791564543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62895783771 + 62895783772.

It is an arithmetic number, because the mean of its divisors is an integer number (62895783772).

Almost surely, 2^125791567543 is an apocalyptic number.

125791567543 is a deficient number, since it is larger than the sum of its proper divisors (1).

125791567543 is an equidigital number, since it uses as much as digits as its factorization.

125791567543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7938000, while the sum is 55.

The spelling of 125791567543 in words is "one hundred twenty-five billion, seven hundred ninety-one million, five hundred sixty-seven thousand, five hundred forty-three".