44309616381 has 10 divisors (see below), whose sum is σ = 66190908542. Its totient is φ = 29539744200.

The previous prime is 44309616371. The next prime is 44309616389. The reversal of 44309616381 is 18361690344.

44309616381 is a `hidden beast` number, since 4 + 4 + 3 + 0 + 9 + 6 + 1 + 638 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 41742167481 + 2567448900 = 204309^2 + 50670^2 .

It is not a de Polignac number, because 44309616381 - 2²⁹ = 43772745469 is a prime.

It is a super-2 number, since 2×44309616381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44309616389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 273516070 + ... + 273516231.

Almost surely, 2^44309616381 is an apocalyptic number.

It is an amenable number.

44309616381 is a deficient number, since it is larger than the sum of its proper divisors (21881292161).

44309616381 is an equidigital number, since it uses as much as digits as its factorization.

44309616381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547032313 (or 547032304 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 44309616381 in words is "forty-four billion, three hundred nine million, six hundred sixteen thousand, three hundred eighty-one".