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12308970805 = 54357251027
BaseRepresentation
bin10110111011010101…
…11111110100110101
31011202211111111121121
423131222333310311
5200202044031210
65353223543541
7614012345155
oct133552776465
934684444547
1012308970805
115247102a4a
1224762babb1
1312121838a1
1484aa88765
154c09526da
hex2ddabfd35

12308970805 has 8 divisors (see below), whose sum is σ = 15114271392. Its totient is φ = 9618172368.

The previous prime is 12308970797. The next prime is 12308970809. The reversal of 12308970805 is 50807980321.

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 12308970805 - 23 = 12308970797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12308970809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28625299 + ... + 28625728.

It is an arithmetic number, because the mean of its divisors is an integer number (1889283924).

Almost surely, 212308970805 is an apocalyptic number.

It is an amenable number.

12308970805 is a deficient number, since it is larger than the sum of its proper divisors (2805300587).

12308970805 is an equidigital number, since it uses as much as digits as its factorization.

12308970805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57251075.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 12308970805 in words is "twelve billion, three hundred eight million, nine hundred seventy thousand, eight hundred five".

Divisors: 1 5 43 215 57251027 286255135 2461794161 12308970805