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10661530285 = 572361217117
BaseRepresentation
bin10011110110111101…
…00000101010101101
31000112000112212002001
421323132200222231
5133313322432120
64521533332301
7525126340450
oct117336405255
930460485061
1010661530285
11458117955a
122096637091
13100ba7a703
14731d65497
15425ed1e0a
hex27b7a0aad

10661530285 has 32 divisors (see below), whose sum is σ = 15507436032. Its totient is φ = 6878234880.

The previous prime is 10661530273. The next prime is 10661530289. The reversal of 10661530285 is 58203516601.

It is not a de Polignac number, because 10661530285 - 211 = 10661528237 is a prime.

It is a super-2 number, since 2×106615302852 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661530289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59454 + ... + 157663.

It is an arithmetic number, because the mean of its divisors is an integer number (484607376).

Almost surely, 210661530285 is an apocalyptic number.

It is an amenable number.

10661530285 is a deficient number, since it is larger than the sum of its proper divisors (4845905747).

10661530285 is a wasteful number, since it uses less digits than its factorization.

10661530285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217213.

The product of its (nonzero) digits is 43200, while the sum is 37.

It can be divided in two parts, 106615 and 30285, that added together give a square (136900 = 3702).

The spelling of 10661530285 in words is "ten billion, six hundred sixty-one million, five hundred thirty thousand, two hundred eighty-five".

Divisors: 1 5 7 23 35 61 115 161 305 427 805 1403 2135 7015 9821 49105 217117 1085585 1519819 4993691 7599095 13244137 24968455 34955837 66220685 92708959 174779185 304615151 463544795 1523075755 2132306057 10661530285