44027507821 has 12 divisors (see below), whose sum is σ = 48477820636. Its totient is φ = 39955576320.

The previous prime is 44027507759. The next prime is 44027507831. The reversal of 44027507821 is 12870572044.

It can be written as a sum of positive squares in 2 ways, for example, as 43635032100 + 392475721 = 208890^2 + 19811^2 .

It is not a de Polignac number, because 44027507821 - 2⁹ = 44027507309 is a prime.

It is a super-3 number, since 3×44027507821³ (a number of 33 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44027507831) 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 11 ways as a sum of consecutive naturals, for example, 245490 + ... + 385123.

Almost surely, 2^44027507821 is an apocalyptic number.

It is an amenable number.

44027507821 is a deficient number, since it is larger than the sum of its proper divisors (4450312815).

44027507821 is a wasteful number, since it uses less digits than its factorization.

44027507821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631212 (or 631201 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 44027507821 in words is "forty-four billion, twenty-seven million, five hundred seven thousand, eight hundred twenty-one".