78152278644068 has 12 divisors (see below), whose sum is σ = 143964723818160. Its totient is φ = 37019500410312.

The previous prime is 78152278644067. The next prime is 78152278644079. The reversal of 78152278644068 is 86044687225187.

It is a super-2 number, since 2×78152278644068² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78152278643989 and 78152278644007.

It is not an unprimeable number, because it can be changed into a prime (78152278644067) 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 3 ways as a sum of consecutive naturals, for example, 514159727846 + ... + 514159727997.

It is an arithmetic number, because the mean of its divisors is an integer number (11997060318180).

Almost surely, 2^{78152278644068} is an apocalyptic number.

It is an amenable number.

78152278644068 is a deficient number, since it is larger than the sum of its proper divisors (65812445174092).

78152278644068 is a wasteful number, since it uses less digits than its factorization.

78152278644068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028319455866 (or 1028319455864 counting only the distinct ones).

The product of its (nonzero) digits is 289013760, while the sum is 68.

The spelling of 78152278644068 in words is "seventy-eight trillion, one hundred fifty-two billion, two hundred seventy-eight million, six hundred forty-four thousand, sixty-eight".