78467823822728 has 32 divisors (see below), whose sum is σ = 147269145237600. Its totient is φ = 39196069423488.

The previous prime is 78467823822719. The next prime is 78467823822749. The reversal of 78467823822728 is 82722832876487.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34505075 + ... + 36708797.

It is an arithmetic number, because the mean of its divisors is an integer number (4602160788675).

Almost surely, 2^{78467823822728} is an apocalyptic number.

It is an amenable number.

78467823822728 is a deficient number, since it is larger than the sum of its proper divisors (68801321414872).

78467823822728 is a wasteful number, since it uses less digits than its factorization.

78467823822728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208021 (or 2208017 counting only the distinct ones).

The product of its digits is 1618477056, while the sum is 74.

The spelling of 78467823822728 in words is "seventy-eight trillion, four hundred sixty-seven billion, eight hundred twenty-three million, eight hundred twenty-two thousand, seven hundred twenty-eight".