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164284511215 = 51125112779319
BaseRepresentation
bin1001100100000000011…
…1101011001111101111
3120201001021021212110111
42121000013223033233
510142423313324330
6203245443120451
714604060206356
oct2310007531757
9521037255414
10164284511215
1163744361920
1227a0a673127
1312651ac5166
147d4696899d
154417bb232a
hex26401eb3ef

164284511215 has 32 divisors (see below), whose sum is σ = 216112458240. Its totient is φ = 118897680000.

The previous prime is 164284511203. The next prime is 164284511267. The reversal of 164284511215 is 512115482461.

It is not a de Polignac number, because 164284511215 - 211 = 164284509167 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, 17624326 + ... + 17633644.

It is an arithmetic number, because the mean of its divisors is an integer number (6753514320).

Almost surely, 2164284511215 is an apocalyptic number.

164284511215 is a deficient number, since it is larger than the sum of its proper divisors (51827947025).

164284511215 is a wasteful number, since it uses less digits than its factorization.

164284511215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10863.

The product of its digits is 76800, while the sum is 40.

Adding to 164284511215 its reverse (512115482461), we get a palindrome (676399993676).

The spelling of 164284511215 in words is "one hundred sixty-four billion, two hundred eighty-four million, five hundred eleven thousand, two hundred fifteen".

Divisors: 1 5 11 55 251 1255 1277 2761 6385 9319 13805 14047 46595 70235 102509 320527 512545 1602635 2339069 3525797 11695345 11900363 17628985 25729759 59501815 128648795 130903993 654519965 2986991113 14934955565 32856902243 164284511215