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12142663551 = 321561986381
BaseRepresentation
bin10110100111100001…
…00101011101111111
31011100020120012221200
423103300211131333
5144332010213201
65324523230543
7606622636314
oct132360453577
934306505850
1012142663551
115171242937
12242a678453
1311b6895325
14832956d0b
154b1051386
hex2d3c2577f

12142663551 has 12 divisors (see below), whose sum is σ = 17540728920. Its totient is φ = 8094497040.

The previous prime is 12142663541. The next prime is 12142663553. The reversal of 12142663551 is 15536624121.

12142663551 is a `hidden beast` number, since 1 + 2 + 1 + 42 + 6 + 63 + 551 = 666.

It is not a de Polignac number, because 12142663551 - 213 = 12142655359 is a prime.

It is a super-2 number, since 2×121426635512 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142663553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97381 + ... + 183761.

It is an arithmetic number, because the mean of its divisors is an integer number (1461727410).

Almost surely, 212142663551 is an apocalyptic number.

12142663551 is a deficient number, since it is larger than the sum of its proper divisors (5398065369).

12142663551 is a wasteful number, since it uses less digits than its factorization.

12142663551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102006 (or 102003 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 12142663551 in words is "twelve billion, one hundred forty-two million, six hundred sixty-three thousand, five hundred fifty-one".

Divisors: 1 3 9 15619 46857 86381 140571 259143 777429 1349184839 4047554517 12142663551