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7055661613 = 71131324481
BaseRepresentation
bin1101001001000110…
…01101101000101101
3200012201110202011111
412210203031220231
5103422222132423
63124043152021
7336563064010
oct64443155055
920181422144
107055661613
112aa0812000
12144ab15611
138859c4300
144ad0c9377
152b466160d
hex1a48cda2d

7055661613 has 48 divisors (see below), whose sum is σ = 9606252672. Its totient is φ = 5073868800.

The previous prime is 7055661611. The next prime is 7055661617. The reversal of 7055661613 is 3161665507.

It is not a de Polignac number, because 7055661613 - 21 = 7055661611 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 (7055661611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1572333 + ... + 1576813.

It is an arithmetic number, because the mean of its divisors is an integer number (200130264).

Almost surely, 27055661613 is an apocalyptic number.

It is an amenable number.

7055661613 is a deficient number, since it is larger than the sum of its proper divisors (2550591059).

7055661613 is a wasteful number, since it uses less digits than its factorization.

7055661613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4547 (or 4512 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 7055661613 is about 83997.9857675171. The cubic root of 7055661613 is about 1917.9881281471.

The spelling of 7055661613 in words is "seven billion, fifty-five million, six hundred sixty-one thousand, six hundred thirteen".

Divisors: 1 7 11 13 77 91 121 143 169 847 1001 1183 1331 1573 1859 4481 9317 11011 13013 17303 20449 31367 49291 58253 121121 143143 224939 345037 407771 542201 640783 757289 1574573 3795407 4485481 5301023 5964211 7048613 8330179 41749477 49340291 58311253 77534743 91631969 542743201 641423783 1007951659 7055661613