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23145454253 = 1721096191187
BaseRepresentation
bin10101100011100100…
…111001101010101101
32012202001020220022102
4111203210321222231
5334400214014003
614344411224445
71446365054315
oct254344715255
965661226272
1023145454253
1198a8007399
12459b448125
13224b258c7c
141197d52445
15906e92588
hex563939aad

23145454253 has 24 divisors (see below), whose sum is σ = 24873631200. Its totient is φ = 21531080448.

The previous prime is 23145454249. The next prime is 23145454259. The reversal of 23145454253 is 35245454132.

It is not a de Polignac number, because 23145454253 - 22 = 23145454249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145454259) 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 23 ways as a sum of consecutive naturals, for example, 19498526 + ... + 19499712.

It is an arithmetic number, because the mean of its divisors is an integer number (1036401300).

Almost surely, 223145454253 is an apocalyptic number.

It is an amenable number.

23145454253 is a deficient number, since it is larger than the sum of its proper divisors (1728176947).

23145454253 is a wasteful number, since it uses less digits than its factorization.

23145454253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1932 counting only the distinct ones).

The product of its digits is 288000, while the sum is 38.

The spelling of 23145454253 in words is "twenty-three billion, one hundred forty-five million, four hundred fifty-four thousand, two hundred fifty-three".

Divisors: 1 17 109 289 619 1187 1853 10523 20179 31501 67471 129383 178891 343043 734753 1147007 2199511 12490801 19499119 37391687 80088077 212343617 1361497309 23145454253