78647209408 has 14 divisors (see below), whose sum is σ = 156065556296. Its totient is φ = 39323604672.

The previous prime is 78647209369. The next prime is 78647209427. The reversal of 78647209408 is 80490274687.

It is a happy number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 614431260 + ... + 614431387.

Almost surely, 2^78647209408 is an apocalyptic number.

It is an amenable number.

78647209408 is a deficient number, since it is larger than the sum of its proper divisors (77418346888).

78647209408 is a wasteful number, since it uses less digits than its factorization.

78647209408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228862659 (or 1228862649 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 78647209408 in words is "seventy-eight billion, six hundred forty-seven million, two hundred nine thousand, four hundred eight".