44521621063 has 4 divisors (see below), whose sum is σ = 44522824840. Its totient is φ = 44520417288.

The previous prime is 44521621057. The next prime is 44521621099. The reversal of 44521621063 is 36012612544.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44521621063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44521621363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544593 + ... + 620986.

It is an arithmetic number, because the mean of its divisors is an integer number (11130706210).

Almost surely, 2^44521621063 is an apocalyptic number.

44521621063 is a deficient number, since it is larger than the sum of its proper divisors (1203777).

44521621063 is a wasteful number, since it uses less digits than its factorization.

44521621063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203776.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 44521621063 in words is "forty-four billion, five hundred twenty-one million, six hundred twenty-one thousand, sixty-three".