78472338784668 has 36 divisors (see below), whose sum is σ = 199226837813640. Its totient is φ = 26043221602656.

The previous prime is 78472338784663. The next prime is 78472338784703. The reversal of 78472338784668 is 86648783327487.

78472338784668 is a `hidden beast` number, since 7 + 8 + 4 + 72 + 3 + 3 + 87 + 8 + 466 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78472338784663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4759352430 + ... + 4759368917.

Almost surely, 2^{78472338784668} is an apocalyptic number.

It is an amenable number.

78472338784668 is an abundant number, since it is smaller than the sum of its proper divisors (120754499028972).

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

78472338784668 is a wasteful number, since it uses less digits than its factorization.

78472338784668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9518721586 (or 9518721581 counting only the distinct ones).

The product of its digits is 14566293504, while the sum is 81.

The spelling of 78472338784668 in words is "seventy-eight trillion, four hundred seventy-two billion, three hundred thirty-eight million, seven hundred eighty-four thousand, six hundred sixty-eight".