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44008121357 = 172588713021
BaseRepresentation
bin101000111111000101…
…101010010000001101
311012121000001012100122
4220333011222100031
51210112034340412
632114514434325
73115363600544
oct507705522015
9135530035318
1044008121357
1117733489a32
1286422929a5
1341c45886c5
1421b6a3715b
151228813572
hexa3f16a40d

44008121357 has 4 divisors (see below), whose sum is σ = 46596834396. Its totient is φ = 41419408320.

The previous prime is 44008121341. The next prime is 44008121359. The reversal of 44008121357 is 75312180044.

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 35925032521 + 8083088836 = 189539^2 + 89906^2 .

It is a cyclic number.

It is not a de Polignac number, because 44008121357 - 24 = 44008121341 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 (44008121359) 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, 1294356494 + ... + 1294356527.

It is an arithmetic number, because the mean of its divisors is an integer number (11649208599).

Almost surely, 244008121357 is an apocalyptic number.

It is an amenable number.

44008121357 is a deficient number, since it is larger than the sum of its proper divisors (2588713039).

44008121357 is a wasteful number, since it uses less digits than its factorization.

44008121357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588713038.

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 44008121357 in words is "forty-four billion, eight million, one hundred twenty-one thousand, three hundred fifty-seven".

Divisors: 1 17 2588713021 44008121357