78508206444 has 12 divisors (see below), whose sum is σ = 183185815064. Its totient is φ = 26169402144.

The previous prime is 78508206419. The next prime is 78508206451. The reversal of 78508206444 is 44460280587.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 78508206393 and 78508206402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3271175257 + ... + 3271175280.

Almost surely, 2^78508206444 is an apocalyptic number.

It is an amenable number.

78508206444 is an abundant number, since it is smaller than the sum of its proper divisors (104677608620).

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

78508206444 is a wasteful number, since it uses less digits than its factorization.

78508206444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6542350544 (or 6542350542 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 48.

The spelling of 78508206444 in words is "seventy-eight billion, five hundred eight million, two hundred six thousand, four hundred forty-four".