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12423441144 = 233517643381
BaseRepresentation
bin10111001000111111…
…01010101011111000
31012001210220012101210
423210133222223320
5200420400104034
65412433243120
7616602336012
oct134437525370
935053805353
1012423441144
1152a5788234
1224a87034a0
13122cac290a
1485bd651b2
154caa148e9
hex2e47eaaf8

12423441144 has 16 divisors (see below), whose sum is σ = 31058602920. Its totient is φ = 4141147040.

The previous prime is 12423441131. The next prime is 12423441181. The reversal of 12423441144 is 44114432421.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

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, 258821667 + ... + 258821714.

Almost surely, 212423441144 is an apocalyptic number.

It is an amenable number.

12423441144 is an abundant number, since it is smaller than the sum of its proper divisors (18635161776).

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

12423441144 is a wasteful number, since it uses less digits than its factorization.

12423441144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517643390 (or 517643386 counting only the distinct ones).

The product of its digits is 12288, while the sum is 30.

Adding to 12423441144 its reverse (44114432421), we get a palindrome (56537873565).

The spelling of 12423441144 in words is "twelve billion, four hundred twenty-three million, four hundred forty-one thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 24 517643381 1035286762 1552930143 2070573524 3105860286 4141147048 6211720572 12423441144