147766778071447 has 2 divisors, whose sum is σ = 147766778071448. Its totient is φ = 147766778071446.

The previous prime is 147766778071403. The next prime is 147766778071457. The reversal of 147766778071447 is 744170877667741.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147766778071447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147766778071457) 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, 73883389035723 + 73883389035724.

It is an arithmetic number, because the mean of its divisors is an integer number (73883389035724).

Almost surely, 2^{147766778071447} is an apocalyptic number.

147766778071447 is a deficient number, since it is larger than the sum of its proper divisors (1).

147766778071447 is an equidigital number, since it uses as much as digits as its factorization.

147766778071447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2168506368, while the sum is 76.

The spelling of 147766778071447 in words is "one hundred forty-seven trillion, seven hundred sixty-six billion, seven hundred seventy-eight million, seventy-one thousand, four hundred forty-seven".