7994782434123 has 12 divisors (see below), whose sum is σ = 11551649423808. Its totient is φ = 5328179408880.

The previous prime is 7994782434097. The next prime is 7994782434179. The reversal of 7994782434123 is 3214342874997.

7994782434123 is a `hidden beast` number, since 7 + 9 + 9 + 4 + 78 + 2 + 434 + 123 = 666.

It is not a de Polignac number, because 7994782434123 - 2⁵ = 7994782434091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7994782434523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139598715 + ... + 139655972.

It is an arithmetic number, because the mean of its divisors is an integer number (962637451984).

Almost surely, 2^{7994782434123} is an apocalyptic number.

7994782434123 is a deficient number, since it is larger than the sum of its proper divisors (3556866989685).

7994782434123 is a wasteful number, since it uses less digits than its factorization.

7994782434123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279257874 (or 279257871 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 63.

The spelling of 7994782434123 in words is "seven trillion, nine hundred ninety-four billion, seven hundred eighty-two million, four hundred thirty-four thousand, one hundred twenty-three".