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44139755361 = 31319283210487
BaseRepresentation
bin101001000110111011…
…110011011101100001
311012221011201220021010
4221012323303131201
51210344234132421
632135540051133
73121552505262
oct510673633541
9135834656233
1044139755361
11177a0817569
12867a393aa9
134215926b50
1421ca300969
151235166076
hexa46ef3761

44139755361 has 32 divisors (see below), whose sum is σ = 66952023040. Its totient is φ = 25642246464.

The previous prime is 44139755351. The next prime is 44139755447. The reversal of 44139755361 is 16355793144.

It is not a de Polignac number, because 44139755361 - 25 = 44139755329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44139755361.

It is not an unprimeable number, because it can be changed into a prime (44139755321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104460 + ... + 314946.

It is an arithmetic number, because the mean of its divisors is an integer number (2092250720).

Almost surely, 244139755361 is an apocalyptic number.

It is an amenable number.

44139755361 is a deficient number, since it is larger than the sum of its proper divisors (22812267679).

44139755361 is a wasteful number, since it uses less digits than its factorization.

44139755361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210805.

The product of its digits is 1360800, while the sum is 48.

The spelling of 44139755361 in words is "forty-four billion, one hundred thirty-nine million, seven hundred fifty-five thousand, three hundred sixty-one".

Divisors: 1 3 13 19 39 57 247 283 741 849 3679 5377 11037 16131 69901 209703 210487 631461 2736331 3999253 8208993 11997759 51990289 59567821 155970867 178703463 774381673 1131788599 2323145019 3395365797 14713251787 44139755361