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145911444468 = 22316374596853
BaseRepresentation
bin1000011111100011111…
…1111111001111110100
3111221121211010101001220
42013320333333033310
54342311312210333
6151010352350340
713353551546166
oct2077077771764
9457554111056
10145911444468
115697622a939
12243415453b0
13109b44c342a
1470c2788936
153bdebb58b3
hex21f8fff3f4

145911444468 has 24 divisors (see below), whose sum is σ = 342548753568. Its totient is φ = 48338760096.

The previous prime is 145911444463. The next prime is 145911444487. The reversal of 145911444468 is 864444119541.

It is a self number, because there is not a number n which added to its sum of digits gives 145911444468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145911444463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37296471 + ... + 37300382.

It is an arithmetic number, because the mean of its divisors is an integer number (14272864732).

Almost surely, 2145911444468 is an apocalyptic number.

It is an amenable number.

145911444468 is an abundant number, since it is smaller than the sum of its proper divisors (196637309100).

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

145911444468 is a wasteful number, since it uses less digits than its factorization.

145911444468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74597023 (or 74597021 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 51.

The spelling of 145911444468 in words is "one hundred forty-five billion, nine hundred eleven million, four hundred forty-four thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 12 163 326 489 652 978 1956 74596853 149193706 223790559 298387412 447581118 895162236 12159287039 24318574078 36477861117 48637148156 72955722234 145911444468