68745219541 has 2 divisors, whose sum is σ = 68745219542. Its totient is φ = 68745219540.

The previous prime is 68745219527. The next prime is 68745219589. The reversal of 68745219541 is 14591254786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68580610641 + 164608900 = 261879^2 + 12830^2 .

It is a cyclic number.

It is not a de Polignac number, because 68745219541 - 2⁹ = 68745219029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68745214541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34372609770 + 34372609771.

It is an arithmetic number, because the mean of its divisors is an integer number (34372609771).

Almost surely, 2^68745219541 is an apocalyptic number.

It is an amenable number.

68745219541 is a deficient number, since it is larger than the sum of its proper divisors (1).

68745219541 is an equidigital number, since it uses as much as digits as its factorization.

68745219541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 52.

The spelling of 68745219541 in words is "sixty-eight billion, seven hundred forty-five million, two hundred nineteen thousand, five hundred forty-one".