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12997948914 = 2321409512497
BaseRepresentation
bin11000001101011110…
…01111010111110010
31020112211221012220100
430012233033113302
5203104433331124
65545435053230
7640046512536
oct140657172762
936484835810
1012997948914
115570004445
122628ba1216
1312c1b34242
148b4393bc6
155111991c9
hex306bcf5f2

12997948914 has 24 divisors (see below), whose sum is σ = 28182265020. Its totient is φ = 4329566208.

The previous prime is 12997948903. The next prime is 12997948933. The reversal of 12997948914 is 41984979921.

It can be written as a sum of positive squares in 2 ways, for example, as 9526736025 + 3471212889 = 97605^2 + 58917^2 .

It is a super-3 number, since 3×129979489143 (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230887 + ... + 281610.

Almost surely, 212997948914 is an apocalyptic number.

12997948914 is an abundant number, since it is smaller than the sum of its proper divisors (15184316106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12997948914 is a wasteful number, since it uses less digits than its factorization.

12997948914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513914 (or 513911 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The spelling of 12997948914 in words is "twelve billion, nine hundred ninety-seven million, nine hundred forty-eight thousand, nine hundred fourteen".

Divisors: 1 2 3 6 9 18 1409 2818 4227 8454 12681 25362 512497 1024994 1537491 3074982 4612473 9224946 722108273 1444216546 2166324819 4332649638 6498974457 12997948914