78589295441 has 2 divisors, whose sum is σ = 78589295442. Its totient is φ = 78589295440.

The previous prime is 78589295429. The next prime is 78589295557. The reversal of 78589295441 is 14459298587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69582526225 + 9006769216 = 263785^2 + 94904^2 .

It is a cyclic number.

It is not a de Polignac number, because 78589295441 - 2⁶ = 78589295377 is a prime.

It is not a weakly prime, because it can be changed into another prime (78589295641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39294647720 + 39294647721.

It is an arithmetic number, because the mean of its divisors is an integer number (39294647721).

Almost surely, 2^78589295441 is an apocalyptic number.

It is an amenable number.

78589295441 is a deficient number, since it is larger than the sum of its proper divisors (1).

78589295441 is an equidigital number, since it uses as much as digits as its factorization.

78589295441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 62.

The spelling of 78589295441 in words is "seventy-eight billion, five hundred eighty-nine million, two hundred ninety-five thousand, four hundred forty-one".