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12812811419 = 101617205607
BaseRepresentation
bin10111110111011001…
…11111110010011011
31020001221120021000002
423323230333302123
5202220034431134
65515223003215
7632341046222
oct137354776233
936057507002
1012812811419
115485552951
122596b9950b
131292681b25
1489795dcb9
154eecc887e
hex2fbb3fc9b

12812811419 has 8 divisors (see below), whose sum is σ = 12960705888. Its totient is φ = 12665329600.

The previous prime is 12812811373. The next prime is 12812811527. The reversal of 12812811419 is 91411821821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12812811419 - 28 = 12812811163 is a prime.

It is a super-2 number, since 2×128128114192 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12812811019) 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, 40487 + ... + 165120.

It is an arithmetic number, because the mean of its divisors is an integer number (1620088236).

Almost surely, 212812811419 is an apocalyptic number.

12812811419 is a deficient number, since it is larger than the sum of its proper divisors (147894469).

12812811419 is a wasteful number, since it uses less digits than its factorization.

12812811419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206325.

The product of its digits is 9216, while the sum is 38.

The spelling of 12812811419 in words is "twelve billion, eight hundred twelve million, eight hundred eleven thousand, four hundred nineteen".

Divisors: 1 101 617 62317 205607 20766307 126859519 12812811419