440164360230253 has 4 divisors (see below), whose sum is σ = 450400740700768. Its totient is φ = 429927979759740.

The previous prime is 440164360230191. The next prime is 440164360230307. The reversal of 440164360230253 is 352032063461044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440164360230253 - 2¹⁷ = 440164360099181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 10236380470471 = 440164360230253 / (4 + 4 + 0 + 1 + 6 + 4 + 3 + 6 + 0 + 2 + 3 + 0 + 2 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440164360230653) 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, 5118190235193 + ... + 5118190235278.

It is an arithmetic number, because the mean of its divisors is an integer number (112600185175192).

Almost surely, 2^{440164360230253} is an apocalyptic number.

440164360230253 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

440164360230253 is a deficient number, since it is larger than the sum of its proper divisors (10236380470515).

440164360230253 is a wasteful number, since it uses less digits than its factorization.

440164360230253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10236380470514.

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 440164360230253 in words is "four hundred forty trillion, one hundred sixty-four billion, three hundred sixty million, two hundred thirty thousand, two hundred fifty-three".