44012261223523 has 4 divisors (see below), whose sum is σ = 44012566578168. Its totient is φ = 44011955868880.

The previous prime is 44012261223521. The next prime is 44012261223599. The reversal of 44012261223523 is 32532216221044.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 44012261223523 - 2¹ = 44012261223521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44012261223521) 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, 152461018 + ... + 152749423.

It is an arithmetic number, because the mean of its divisors is an integer number (11003141644542).

Almost surely, 2^{44012261223523} is an apocalyptic number.

44012261223523 is a deficient number, since it is larger than the sum of its proper divisors (305354645).

44012261223523 is a wasteful number, since it uses less digits than its factorization.

44012261223523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305354644.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 44012261223523 its reverse (32532216221044), we get a palindrome (76544477444567).

The spelling of 44012261223523 in words is "forty-four trillion, twelve billion, two hundred sixty-one million, two hundred twenty-three thousand, five hundred twenty-three".