78566465480 has 16 divisors (see below), whose sum is σ = 176774547420. Its totient is φ = 31426586176.

The previous prime is 78566465401. The next prime is 78566465521. The reversal of 78566465480 is 8456466587.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69235291876 + 9331173604 = 263126^2 + 96598^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 982080779 + ... + 982080858.

Almost surely, 2^78566465480 is an apocalyptic number.

It is an amenable number.

78566465480 is an abundant number, since it is smaller than the sum of its proper divisors (98208081940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78566465480 is a wasteful number, since it uses less digits than its factorization.

78566465480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964161648 (or 1964161644 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 59.

The spelling of 78566465480 in words is "seventy-eight billion, five hundred sixty-six million, four hundred sixty-five thousand, four hundred eighty".