7578650856 has 80 divisors (see below), whose sum is σ = 22103251200. Its totient is φ = 2165312352.

The previous prime is 7578650839. The next prime is 7578650861. The reversal of 7578650856 is 6580568757.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7578650796 and 7578650805.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8136 + ... + 123383.

It is an arithmetic number, because the mean of its divisors is an integer number (276290640).

Almost surely, 2^7578650856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7578650856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11051625600).

7578650856 is an abundant number, since it is smaller than the sum of its proper divisors (14524600344).

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

7578650856 is a wasteful number, since it uses less digits than its factorization.

7578650856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131556 (or 131531 counting only the distinct ones).

The product of its (nonzero) digits is 14112000, while the sum is 57.

The square root of 7578650856 is about 87055.4470208499. The cubic root of 7578650856 is about 1964.2524338750.

The spelling of 7578650856 in words is "seven billion, five hundred seventy-eight million, six hundred fifty thousand, eight hundred fifty-six".