78073275089 has 2 divisors, whose sum is σ = 78073275090. Its totient is φ = 78073275088.

The previous prime is 78073274977. The next prime is 78073275131. The reversal of 78073275089 is 98057237087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76503134464 + 1570140625 = 276592^2 + 39625^2 .

It is an emirp because it is prime and its reverse (98057237087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78073275089 - 2¹² = 78073270993 is a prime.

It is not a weakly prime, because it can be changed into another prime (78073275289) 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, 39036637544 + 39036637545.

It is an arithmetic number, because the mean of its divisors is an integer number (39036637545).

Almost surely, 2^78073275089 is an apocalyptic number.

It is an amenable number.

78073275089 is a deficient number, since it is larger than the sum of its proper divisors (1).

78073275089 is an equidigital number, since it uses as much as digits as its factorization.

78073275089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 78073275089 in words is "seventy-eight billion, seventy-three million, two hundred seventy-five thousand, eighty-nine".