78087043984 has 20 divisors (see below), whose sum is σ = 152853379084. Its totient is φ = 38641010688.

The previous prime is 78087043933. The next prime is 78087044053. The reversal of 78087043984 is 48934078087.

It can be written as a sum of positive squares in 2 ways, for example, as 14915248384 + 63171795600 = 122128^2 + 251340^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25155357 + ... + 25158460.

Almost surely, 2^78087043984 is an apocalyptic number.

It is an amenable number.

78087043984 is a deficient number, since it is larger than the sum of its proper divisors (74766335100).

78087043984 is a wasteful number, since it uses less digits than its factorization.

78087043984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50313922 (or 50313916 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 58.

The spelling of 78087043984 in words is "seventy-eight billion, eighty-seven million, forty-three thousand, nine hundred eighty-four".