61368238745843 has 2 divisors, whose sum is σ = 61368238745844. Its totient is φ = 61368238745842.

The previous prime is 61368238745819. The next prime is 61368238745881. The reversal of 61368238745843 is 34854783286316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61368238745843 - 2²² = 61368234551539 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (61368238744843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30684119372921 + 30684119372922.

It is an arithmetic number, because the mean of its divisors is an integer number (30684119372922).

Almost surely, 2^{61368238745843} is an apocalyptic number.

61368238745843 is a deficient number, since it is larger than the sum of its proper divisors (1).

61368238745843 is an equidigital number, since it uses as much as digits as its factorization.

61368238745843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 557383680, while the sum is 68.

The spelling of 61368238745843 in words is "sixty-one trillion, three hundred sixty-eight billion, two hundred thirty-eight million, seven hundred forty-five thousand, eight hundred forty-three".