78820028260 has 48 divisors (see below), whose sum is σ = 174351240000. Its totient is φ = 29848500864.

The previous prime is 78820028237. The next prime is 78820028263. The reversal of 78820028260 is 6282002887.

It is not an unprimeable number, because it can be changed into a prime (78820028263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500434 + ... + 638806.

It is an arithmetic number, because the mean of its divisors is an integer number (3632317500).

Almost surely, 2^78820028260 is an apocalyptic number.

It is an amenable number.

78820028260 is an abundant number, since it is smaller than the sum of its proper divisors (95531211740).

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

78820028260 is a wasteful number, since it uses less digits than its factorization.

78820028260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139900 (or 139898 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 78820028260 in words is "seventy-eight billion, eight hundred twenty million, twenty-eight thousand, two hundred sixty".