7843139709044 has 24 divisors (see below), whose sum is σ = 13950668954208. Its totient is φ = 3857235827040.

The previous prime is 7843139709019. The next prime is 7843139709049. The reversal of 7843139709044 is 4409079313487.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7843139709049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30107519 + ... + 30366905.

It is an arithmetic number, because the mean of its divisors is an integer number (581277873092).

Almost surely, 2^{7843139709044} is an apocalyptic number.

It is an amenable number.

7843139709044 is a deficient number, since it is larger than the sum of its proper divisors (6107529245164).

7843139709044 is a wasteful number, since it uses less digits than its factorization.

7843139709044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383375 (or 383373 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 59.

The spelling of 7843139709044 in words is "seven trillion, eight hundred forty-three billion, one hundred thirty-nine million, seven hundred nine thousand, forty-four".