42643741844 has 24 divisors (see below), whose sum is σ = 81438159936. Its totient is φ = 19377000000.

The previous prime is 42643741843. The next prime is 42643741849. The reversal of 42643741844 is 44814734624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42643741841) 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, 29432 + ... + 293519.

It is an arithmetic number, because the mean of its divisors is an integer number (3393256664).

Almost surely, 2^42643741844 is an apocalyptic number.

42643741844 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42643741844 is a deficient number, since it is larger than the sum of its proper divisors (38794418092).

42643741844 is a wasteful number, since it uses less digits than its factorization.

42643741844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325967 (or 325965 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 47.

It can be divided in two parts, 42643 and 741844, that added together give a palindrome (784487).

The spelling of 42643741844 in words is "forty-two billion, six hundred forty-three million, seven hundred forty-one thousand, eight hundred forty-four".