4488344137993 has 4 divisors (see below), whose sum is σ = 4643114625540. Its totient is φ = 4333573650448.

The previous prime is 4488344137973. The next prime is 4488344137997. The reversal of 4488344137993 is 3997314438844.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1034110015744 + 3454234122249 = 1016912^2 + 1858557^2 .

It is a cyclic number.

It is not a de Polignac number, because 4488344137993 - 2⁹ = 4488344137481 is a prime.

It is a super-2 number, since 2×4488344137993² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4488344137997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77385243730 + ... + 77385243787.

It is an arithmetic number, because the mean of its divisors is an integer number (1160778656385).

Almost surely, 2^{4488344137993} is an apocalyptic number.

It is an amenable number.

4488344137993 is a deficient number, since it is larger than the sum of its proper divisors (154770487547).

4488344137993 is a wasteful number, since it uses less digits than its factorization.

4488344137993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154770487546.

The product of its digits is 250822656, while the sum is 67.

The spelling of 4488344137993 in words is "four trillion, four hundred eighty-eight billion, three hundred forty-four million, one hundred thirty-seven thousand, nine hundred ninety-three".