78056083188649 has 2 divisors, whose sum is σ = 78056083188650. Its totient is φ = 78056083188648.

The previous prime is 78056083188539. The next prime is 78056083188667. The reversal of 78056083188649 is 94688138065087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42492667449600 + 35563415739049 = 6518640^2 + 5963507^2 .

It is a cyclic number.

It is not a de Polignac number, because 78056083188649 - 2²¹ = 78056081091497 is a prime.

It is not a weakly prime, because it can be changed into another prime (78056083189649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39028041594324 + 39028041594325.

It is an arithmetic number, because the mean of its divisors is an integer number (39028041594325).

Almost surely, 2^{78056083188649} is an apocalyptic number.

It is an amenable number.

78056083188649 is a deficient number, since it is larger than the sum of its proper divisors (1).

78056083188649 is an equidigital number, since it uses as much as digits as its factorization.

78056083188649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 557383680, while the sum is 73.

The spelling of 78056083188649 in words is "seventy-eight trillion, fifty-six billion, eighty-three million, one hundred eighty-eight thousand, six hundred forty-nine".