78508471805068 has 12 divisors (see below), whose sum is σ = 137389891184560. Its totient is φ = 39254217180912.

The previous prime is 78508471805009. The next prime is 78508471805111. The reversal of 78508471805068 is 86050817480587.

It is a super-2 number, since 2×78508471805068² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78508471804994 and 78508471805012.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9587938 + ... + 15778006.

Almost surely, 2^{78508471805068} is an apocalyptic number.

It is an amenable number.

78508471805068 is a deficient number, since it is larger than the sum of its proper divisors (58881419379492).

78508471805068 is a wasteful number, since it uses less digits than its factorization.

78508471805068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9360816 (or 9360814 counting only the distinct ones).

The product of its (nonzero) digits is 120422400, while the sum is 67.

The spelling of 78508471805068 in words is "seventy-eight trillion, five hundred eight billion, four hundred seventy-one million, eight hundred five thousand, sixty-eight".