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16241208481 = 31241112
BaseRepresentation
bin11110010000000110…
…10010110010100001
31112220212200212122001
433020003102302201
5231230222132411
611243333244001
71113320665021
oct171003226241
945825625561
1016241208481
116984814353
123193193601
1316baa3b144
14b00ddda81
15650c8edc1
hex3c80d2ca1

16241208481 has 9 divisors (see below), whose sum is σ = 16786101969. Its totient is φ = 15713475300.

The previous prime is 16241208457. The next prime is 16241208509. The reversal of 16241208481 is 18480214261.

The square root of 16241208481 is 127441.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 16241208481 - 25 = 16241208449 is a prime.

It is a super-2 number, since 2×162412084812 (a number of 21 digits) contains 22 as substring.

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 16241208481.

It is not an unprimeable number, because it can be changed into a prime (16241208881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3948616 + ... + 3952726.

It is an arithmetic number, because the mean of its divisors is an integer number (1865122441).

Almost surely, 216241208481 is an apocalyptic number.

16241208481 is the 127441-st square number.

16241208481 is the 63721-st centered octagonal number.

It is an amenable number.

16241208481 is a deficient number, since it is larger than the sum of its proper divisors (544893488).

16241208481 is an frugal number, since it uses more digits than its factorization.

16241208481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284 (or 4142 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The spelling of 16241208481 in words is "sixteen billion, two hundred forty-one million, two hundred eight thousand, four hundred eighty-one".

Divisors: 1 31 961 4111 127441 3950671 16900321 523909951 16241208481