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18879285860363 = 377158712242987
BaseRepresentation
bin1000100101011101011010…
…01000001001100000001011
32110211211201220002102021002
410102232231020021200023
54433304234140012423
6104053005120405215
73655661206015445
oct422565510114013
973754656072232
1018879285860363
116019729760385
12214ab2277680b
13a6c402bb0906
14493a95ad3495
1522b160b02228
hex112bad20980b

18879285860363 has 16 divisors (see below), whose sum is σ = 19696127318784. Its totient is φ = 18079462285920.

The previous prime is 18879285860339. The next prime is 18879285860381. The reversal of 18879285860363 is 36306858297881.

It is a cyclic number.

It is not a de Polignac number, because 18879285860363 - 238 = 18604407953419 is a prime.

It is a super-2 number, since 2×188792858603632 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18879285863363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4579445 + ... + 7663542.

It is an arithmetic number, because the mean of its divisors is an integer number (1231007957424).

Almost surely, 218879285860363 is an apocalyptic number.

18879285860363 is a deficient number, since it is larger than the sum of its proper divisors (816841458421).

18879285860363 is a wasteful number, since it uses less digits than its factorization.

18879285860363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12243682.

The product of its (nonzero) digits is 836075520, while the sum is 74.

The spelling of 18879285860363 in words is "eighteen trillion, eight hundred seventy-nine billion, two hundred eighty-five million, eight hundred sixty thousand, three hundred sixty-three".

Divisors: 1 37 71 587 2627 21719 41677 1542049 12242987 452990519 869252077 7186633369 32162326849 265905434653 510250969199 18879285860363