745950721543 has 2 divisors, whose sum is σ = 745950721544. Its totient is φ = 745950721542.

The previous prime is 745950721499. The next prime is 745950721559. The reversal of 745950721543 is 345127059547.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745950721543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745950731543) 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, 372975360771 + 372975360772.

It is an arithmetic number, because the mean of its divisors is an integer number (372975360772).

Almost surely, 2^745950721543 is an apocalyptic number.

745950721543 is a deficient number, since it is larger than the sum of its proper divisors (1).

745950721543 is an equidigital number, since it uses as much as digits as its factorization.

745950721543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292000, while the sum is 52.

The spelling of 745950721543 in words is "seven hundred forty-five billion, nine hundred fifty million, seven hundred twenty-one thousand, five hundred forty-three".