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808909008215 = 57112461414329
BaseRepresentation
bin10111100010101101011…
…10111110110101010111
32212022221021000020201212
423301112232332311113
5101223121201230330
61415335131212035
7112304343056630
oct13612656766527
92768837006655
10808909008215
11292069057500
12110931ba701b
135b38391b479
142b219652887
15160954e8295
hexbc56bbed57

808909008215 has 48 divisors (see below), whose sum is σ = 1222028216640. Its totient is φ = 503159923200.

The previous prime is 808909008169. The next prime is 808909008223. The reversal of 808909008215 is 512800909808.

It is not a de Polignac number, because 808909008215 - 224 = 808892230999 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1745171 + ... + 2159499.

It is an arithmetic number, because the mean of its divisors is an integer number (25458921180).

Almost surely, 2808909008215 is an apocalyptic number.

808909008215 is a deficient number, since it is larger than the sum of its proper divisors (413119208425).

808909008215 is a wasteful number, since it uses less digits than its factorization.

808909008215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414824 (or 414813 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 50.

The spelling of 808909008215 in words is "eight hundred eight billion, nine hundred nine million, eight thousand, two hundred fifteen".

Divisors: 1 5 7 11 35 55 77 121 385 461 605 847 2305 3227 4235 5071 16135 25355 35497 55781 177485 278905 390467 414329 1952335 2071645 2900303 4557619 14501515 22788095 31903333 50133809 159516665 191005669 250669045 350936663 955028345 1337039683 1754683315 2101062359 6685198415 10505311795 14707436513 23111685949 73537182565 115558429745 161781801643 808909008215