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23420615165 = 517319918969
BaseRepresentation
bin10101110011111110…
…100011100111111101
32020110020000112010022
4111303332203213331
5340431134141130
614432001021525
71456245641603
oct256376434775
966406015108
1023420615165
119a29365902
1246576248a5
13229326ab8c
1411c26db873
159211e67e5
hex573fa39fd

23420615165 has 32 divisors (see below), whose sum is σ = 30752317440. Its totient is φ = 17046374400.

The previous prime is 23420615137. The next prime is 23420615219. The reversal of 23420615165 is 56151602432.

It is not a de Polignac number, because 23420615165 - 224 = 23403837949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2606801 + ... + 2615769.

It is an arithmetic number, because the mean of its divisors is an integer number (961009920).

Almost surely, 223420615165 is an apocalyptic number.

It is an amenable number.

23420615165 is a deficient number, since it is larger than the sum of its proper divisors (7331702275).

23420615165 is a wasteful number, since it uses less digits than its factorization.

23420615165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10013.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 23420615165 in words is "twenty-three billion, four hundred twenty million, six hundred fifteen thousand, one hundred sixty-five".

Divisors: 1 5 17 31 85 155 527 991 2635 4955 8969 16847 30721 44845 84235 152473 153605 278039 522257 762365 1390195 2611285 4726663 8888279 23633315 44441395 151100743 275536649 755503715 1377683245 4684123033 23420615165