78564480047 has 2 divisors, whose sum is σ = 78564480048. Its totient is φ = 78564480046.

The previous prime is 78564479963. The next prime is 78564480061. The reversal of 78564480047 is 74008446587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78564480047 - 2²⁸ = 78296044591 is a prime.

It is a super-2 number, since 2×78564480047² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78564480067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39282240023 + 39282240024.

It is an arithmetic number, because the mean of its divisors is an integer number (39282240024).

Almost surely, 2^78564480047 is an apocalyptic number.

78564480047 is a deficient number, since it is larger than the sum of its proper divisors (1).

78564480047 is an equidigital number, since it uses as much as digits as its factorization.

78564480047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6021120, while the sum is 53.

The spelling of 78564480047 in words is "seventy-eight billion, five hundred sixty-four million, four hundred eighty thousand, forty-seven".