44507011721 has 4 divisors (see below), whose sum is σ = 47125071252. Its totient is φ = 41888952192.

The previous prime is 44507011709. The next prime is 44507011739. The reversal of 44507011721 is 12711070544.

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 35039721721 + 9467290000 = 187189^2 + 97300^2 .

It is a cyclic number.

It is not a de Polignac number, because 44507011721 - 2⁶ = 44507011657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44507011771) 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, 1309029740 + ... + 1309029773.

It is an arithmetic number, because the mean of its divisors is an integer number (11781267813).

Almost surely, 2^44507011721 is an apocalyptic number.

It is an amenable number.

44507011721 is a deficient number, since it is larger than the sum of its proper divisors (2618059531).

44507011721 is a wasteful number, since it uses less digits than its factorization.

44507011721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618059530.

The product of its (nonzero) digits is 7840, while the sum is 32.

The spelling of 44507011721 in words is "forty-four billion, five hundred seven million, eleven thousand, seven hundred twenty-one".