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18313287711 = 343394714887
BaseRepresentation
bin10001000011100011…
…101001100000011111
31202021021200101222020
4101003203221200133
5300001200201321
612225113151223
71215551243235
oct210343514037
952237611866
1018313287711
117848412124
1236710bb513
13195b101524
14c5a29c955
15722b3e4c6
hex4438e981f

18313287711 has 16 divisors (see below), whose sum is σ = 24501598464. Its totient is φ = 12166982784.

The previous prime is 18313287667. The next prime is 18313287719. The reversal of 18313287711 is 11778231381.

It is not a de Polignac number, because 18313287711 - 210 = 18313286687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18313287719) 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, 1222710 + ... + 1237596.

It is an arithmetic number, because the mean of its divisors is an integer number (1531349904).

Almost surely, 218313287711 is an apocalyptic number.

18313287711 is a deficient number, since it is larger than the sum of its proper divisors (6188310753).

18313287711 is a wasteful number, since it uses less digits than its factorization.

18313287711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16270.

The product of its digits is 56448, while the sum is 42.

The spelling of 18313287711 in words is "eighteen billion, three hundred thirteen million, two hundred eighty-seven thousand, seven hundred eleven".

Divisors: 1 3 433 947 1299 2841 14887 44661 410051 1230153 6446071 14097989 19338213 42293967 6104429237 18313287711