78564479963 has 2 divisors, whose sum is σ = 78564479964. Its totient is φ = 78564479962.

The previous prime is 78564479921. The next prime is 78564480047. The reversal of 78564479963 is 36997446587.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78564479963 - 2⁶ = 78564479899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78564479893 and 78564479902.

It is not a weakly prime, because it can be changed into another prime (78564479863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39282239981 + 39282239982.

It is an arithmetic number, because the mean of its divisors is an integer number (39282239982).

Almost surely, 2^78564479963 is an apocalyptic number.

78564479963 is a deficient number, since it is larger than the sum of its proper divisors (1).

78564479963 is an equidigital number, since it uses as much as digits as its factorization.

78564479963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 274337280, while the sum is 68.

The spelling of 78564479963 in words is "seventy-eight billion, five hundred sixty-four million, four hundred seventy-nine thousand, nine hundred sixty-three".