78028252808 has 32 divisors (see below), whose sum is σ = 168991673760. Its totient is φ = 33381070080.

The previous prime is 78028252763. The next prime is 78028252823. The reversal of 78028252808 is 80825282087.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

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, 26077466 + ... + 26080457.

It is an arithmetic number, because the mean of its divisors is an integer number (5280989805).

Almost surely, 2^78028252808 is an apocalyptic number.

It is an amenable number.

78028252808 is an abundant number, since it is smaller than the sum of its proper divisors (90963420952).

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

78028252808 is a wasteful number, since it uses less digits than its factorization.

78028252808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52157957 (or 52157953 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 50.

The spelling of 78028252808 in words is "seventy-eight billion, twenty-eight million, two hundred fifty-two thousand, eight hundred eight".