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23053643665 = 5131307271363
BaseRepresentation
bin10101011110000110…
…101010111110010001
32012111122111102212021
4111132012222332101
5334203213044130
614331331331441
71444201511053
oct253606527621
965448442767
1023053643665
1198601a9778
124574750b81
132235221b90
141189a938d3
158edda937a
hex55e1aaf91

23053643665 has 16 divisors (see below), whose sum is σ = 29815305408. Its totient is φ = 17011141056.

The previous prime is 23053643663. The next prime is 23053643671. The reversal of 23053643665 is 56634635032.

It is not a de Polignac number, because 23053643665 - 21 = 23053643663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23053643663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50727 + ... + 220636.

It is an arithmetic number, because the mean of its divisors is an integer number (1863456588).

Almost surely, 223053643665 is an apocalyptic number.

It is an amenable number.

23053643665 is a deficient number, since it is larger than the sum of its proper divisors (6761661743).

23053643665 is a wasteful number, since it uses less digits than its factorization.

23053643665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272688.

The product of its (nonzero) digits is 1166400, while the sum is 43.

The spelling of 23053643665 in words is "twenty-three billion, fifty-three million, six hundred forty-three thousand, six hundred sixty-five".

Divisors: 1 5 13 65 1307 6535 16991 84955 271363 1356815 3527719 17638595 354671441 1773357205 4610728733 23053643665