78280525130 has 32 divisors (see below), whose sum is σ = 146737502208. Its totient is φ = 30033964800.

The previous prime is 78280525129. The next prime is 78280525157. The reversal of 78280525130 is 3152508287.

It is a super-2 number, since 2×78280525130² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1082306 + ... + 1152365.

It is an arithmetic number, because the mean of its divisors is an integer number (4585546944).

Almost surely, 2^78280525130 is an apocalyptic number.

78280525130 is a deficient number, since it is larger than the sum of its proper divisors (68456977078).

78280525130 is a wasteful number, since it uses less digits than its factorization.

78280525130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234822.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 78280525130 in words is "seventy-eight billion, two hundred eighty million, five hundred twenty-five thousand, one hundred thirty".