6444360042 has 16 divisors (see below), whose sum is σ = 13304485632. Its totient is φ = 2078825760.

The previous prime is 6444360007. The next prime is 6444360049. The reversal of 6444360042 is 2400634446.

It is a junction number, because it is equal to n+sod(n) for n = 6444359985 and 6444360012.

It is not an unprimeable number, because it can be changed into a prime (6444360049) 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, 17323363 + ... + 17323734.

It is an arithmetic number, because the mean of its divisors is an integer number (831530352).

Almost surely, 2^6444360042 is an apocalyptic number.

6444360042 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6444360042 is an abundant number, since it is smaller than the sum of its proper divisors (6860125590).

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

6444360042 is a wasteful number, since it uses less digits than its factorization.

6444360042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34647133.

The product of its (nonzero) digits is 55296, while the sum is 33.

The square root of 6444360042 is about 80276.7714971149. The cubic root of 6444360042 is about 1860.9152663889.

Adding to 6444360042 its reverse (2400634446), we get a palindrome (8844994488).

The spelling of 6444360042 in words is "six billion, four hundred forty-four million, three hundred sixty thousand, forty-two".