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12523253144 = 238318860321
BaseRepresentation
bin10111010100111000…
…11010110110011000
31012022202201011201112
423222130122312120
5201121423100034
65430400435452
7622223616053
oct135234326630
935282634645
1012523253144
115347060496
122516018b88
13124769b97c
1486b307a9a
154d467d7ce
hex2ea71ad98

12523253144 has 16 divisors (see below), whose sum is σ = 23764005720. Its totient is φ = 6186184960.

The previous prime is 12523253129. The next prime is 12523253177. The reversal of 12523253144 is 44135232521.

It is a self number, because there is not a number n which added to its sum of digits gives 12523253144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9429497 + ... + 9430824.

Almost surely, 212523253144 is an apocalyptic number.

It is an amenable number.

12523253144 is a deficient number, since it is larger than the sum of its proper divisors (11240752576).

12523253144 is a wasteful number, since it uses less digits than its factorization.

12523253144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18860410 (or 18860406 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

Adding to 12523253144 its reverse (44135232521), we get a palindrome (56658485665).

The spelling of 12523253144 in words is "twelve billion, five hundred twenty-three million, two hundred fifty-three thousand, one hundred forty-four".

Divisors: 1 2 4 8 83 166 332 664 18860321 37720642 75441284 150882568 1565406643 3130813286 6261626572 12523253144