7805078256042 has 32 divisors (see below), whose sum is σ = 17349807087360. Its totient is φ = 2600914440960.

The previous prime is 7805078255941. The next prime is 7805078256139. The reversal of 7805078256042 is 2406528705087.

7805078256042 is a `hidden beast` number, since 7 + 8 + 0 + 5 + 0 + 7 + 8 + 25 + 604 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 7805078256042.

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, 21437559 + ... + 21798602.

It is an arithmetic number, because the mean of its divisors is an integer number (542181471480).

Almost surely, 2^{7805078256042} is an apocalyptic number.

7805078256042 is an abundant number, since it is smaller than the sum of its proper divisors (9544728831318).

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

7805078256042 is a wasteful number, since it uses less digits than its factorization.

7805078256042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43239515 (or 43239509 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 7805078256042 in words is "seven trillion, eight hundred five billion, seventy-eight million, two hundred fifty-six thousand, forty-two".