7850778919568 has 40 divisors (see below), whose sum is σ = 16382394168000. Its totient is φ = 3623117457024.

The previous prime is 7850778919537. The next prime is 7850778919573. The reversal of 7850778919568 is 8659198770587.

It is a junction number, because it is equal to n+sod(n) for n = 7850778919492 and 7850778919501.

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, 715403 + ... + 4026581.

It is an arithmetic number, because the mean of its divisors is an integer number (409559854200).

Almost surely, 2^{7850778919568} is an apocalyptic number.

It is an amenable number.

7850778919568 is an abundant number, since it is smaller than the sum of its proper divisors (8531615248432).

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

7850778919568 is a wasteful number, since it uses less digits than its factorization.

7850778919568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322599 (or 3322593 counting only the distinct ones).

The product of its (nonzero) digits is 2133734400, while the sum is 80.

The spelling of 7850778919568 in words is "seven trillion, eight hundred fifty billion, seven hundred seventy-eight million, nine hundred nineteen thousand, five hundred sixty-eight".