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15444105041 = 19977733653
BaseRepresentation
bin11100110001000101…
…00101011101010001
31110212022210211021102
432120202211131101
5223112142330131
611032300434145
71054501504211
oct163042453521
943768724242
1015444105041
116605881782
122bb0248955
1315c18607c1
14a671ca241
15605cdb1cb
hex3988a5751

15444105041 has 4 divisors (see below), whose sum is σ = 15451840692. Its totient is φ = 15436369392.

The previous prime is 15444105011. The next prime is 15444105137. The reversal of 15444105041 is 14050144451.

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 1311888400 + 14132216641 = 36220^2 + 118879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-15444105041 is a prime.

It is a super-3 number, since 3×154441050413 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15444104995 and 15444105013.

It is not an unprimeable number, because it can be changed into a prime (15444105011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3864830 + ... + 3868823.

It is an arithmetic number, because the mean of its divisors is an integer number (3862960173).

Almost surely, 215444105041 is an apocalyptic number.

It is an amenable number.

15444105041 is a deficient number, since it is larger than the sum of its proper divisors (7735651).

15444105041 is an equidigital number, since it uses as much as digits as its factorization.

15444105041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7735650.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 15444105041 its reverse (14050144451), we get a palindrome (29494249492).

It can be divided in two parts, 1544410 and 5041, that added together give a palindrome (1549451).

The spelling of 15444105041 in words is "fifteen billion, four hundred forty-four million, one hundred five thousand, forty-one".

Divisors: 1 1997 7733653 15444105041