78475622969 has 2 divisors, whose sum is σ = 78475622970. Its totient is φ = 78475622968.

The previous prime is 78475622947. The next prime is 78475622999. The reversal of 78475622969 is 96922657487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45456372025 + 33019250944 = 213205^2 + 181712^2 .

It is a cyclic number.

It is not a de Polignac number, because 78475622969 - 2⁸ = 78475622713 is a prime.

It is a super-3 number, since 3×78475622969³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (78475622999) 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, 39237811484 + 39237811485.

It is an arithmetic number, because the mean of its divisors is an integer number (39237811485).

Almost surely, 2^78475622969 is an apocalyptic number.

It is an amenable number.

78475622969 is a deficient number, since it is larger than the sum of its proper divisors (1).

78475622969 is an equidigital number, since it uses as much as digits as its factorization.

78475622969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91445760, while the sum is 65.

The spelling of 78475622969 in words is "seventy-eight billion, four hundred seventy-five million, six hundred twenty-two thousand, nine hundred sixty-nine".