78864967422953 has 2 divisors, whose sum is σ = 78864967422954. Its totient is φ = 78864967422952.

The previous prime is 78864967422911. The next prime is 78864967422973. The reversal of 78864967422953 is 35922476946887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69803886136384 + 9061081286569 = 8354872^2 + 3010163^2 .

It is a cyclic number.

It is not a de Polignac number, because 78864967422953 - 2¹⁸ = 78864967160809 is a prime.

It is not a weakly prime, because it can be changed into another prime (78864967422973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39432483711476 + 39432483711477.

It is an arithmetic number, because the mean of its divisors is an integer number (39432483711477).

Almost surely, 2^{78864967422953} is an apocalyptic number.

It is an amenable number.

78864967422953 is a deficient number, since it is larger than the sum of its proper divisors (1).

78864967422953 is an equidigital number, since it uses as much as digits as its factorization.

78864967422953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8778792960, while the sum is 80.

The spelling of 78864967422953 in words is "seventy-eight trillion, eight hundred sixty-four billion, nine hundred sixty-seven million, four hundred twenty-two thousand, nine hundred fifty-three".