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BaseRepresentation
bin10101101101111101…
…11110011000101001
31010002121011002212101
422312332332120221
5142334413140421
65205000013401
7561641324641
oct126676763051
933077132771
1011659896361
114a43786793
122314a61261
13113a864c79
147c87a9521
1548398e191
hex2b6fbe629

11659896361 has 3 divisors (see below), whose sum is σ = 11660004343. Its totient is φ = 11659788380.

The previous prime is 11659896341. The next prime is 11659896371. The reversal of 11659896361 is 16369895611.

The square root of 11659896361 is 107981.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16369895611 = 29564479159.

It can be written as a sum of positive squares in only one way, i.e., 7092839961 + 4567056400 = 84219^2 + 67580^2 .

It is not a de Polignac number, because 11659896361 - 25 = 11659896329 is a prime.

It is a super-2 number, since 2×116598963612 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11659896341) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 53991 + ... + 161971.

Almost surely, 211659896361 is an apocalyptic number.

11659896361 is the 107981-st square number.

11659896361 is the 53991-st centered octagonal number.

It is an amenable number.

11659896361 is a deficient number, since it is larger than the sum of its proper divisors (107982).

11659896361 is an frugal number, since it uses more digits than its factorization.

11659896361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215962 (or 107981 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 55.

The spelling of 11659896361 in words is "eleven billion, six hundred fifty-nine million, eight hundred ninety-six thousand, three hundred sixty-one".

Divisors: 1 107981 11659896361