78475623097 has 2 divisors, whose sum is σ = 78475623098. Its totient is φ = 78475623096.

The previous prime is 78475623071. The next prime is 78475623197. The reversal of 78475623097 is 79032657487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72751036176 + 5724586921 = 269724^2 + 75661^2 .

It is a cyclic number.

It is not a de Polignac number, because 78475623097 - 2⁷ = 78475622969 is a prime.

It is not a weakly prime, because it can be changed into another prime (78475623047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39237811548 + 39237811549.

It is an arithmetic number, because the mean of its divisors is an integer number (39237811549).

Almost surely, 2^78475623097 is an apocalyptic number.

It is an amenable number.

78475623097 is a deficient number, since it is larger than the sum of its proper divisors (1).

78475623097 is an equidigital number, since it uses as much as digits as its factorization.

78475623097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17781120, while the sum is 58.

The spelling of 78475623097 in words is "seventy-eight billion, four hundred seventy-five million, six hundred twenty-three thousand, ninety-seven".