7851978606 has 32 divisors (see below), whose sum is σ = 16285022208. Its totient is φ = 2521856160.

The previous prime is 7851978583. The next prime is 7851978619. The reversal of 7851978606 is 6068791587.

It is a congruent 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, 148830 + ... + 194561.

It is an arithmetic number, because the mean of its divisors is an integer number (508906944).

Almost surely, 2^7851978606 is an apocalyptic number.

7851978606 is an abundant number, since it is smaller than the sum of its proper divisors (8433043602).

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

7851978606 is a wasteful number, since it uses less digits than its factorization.

7851978606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343536.

The product of its (nonzero) digits is 5080320, while the sum is 57.

The square root of 7851978606 is about 88611.3909494711. The cubic root of 7851978606 is about 1987.5880144877.

The spelling of 7851978606 in words is "seven billion, eight hundred fifty-one million, nine hundred seventy-eight thousand, six hundred six".