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13293473905 = 55215103061
BaseRepresentation
bin11000110000101101…
…00101000001110001
31021022110000102222101
430120112211001301
5204211112131110
610035033140401
7650265443455
oct143026450161
937273012871
1013293473905
115701901778
1226abb5a701
13133b1261ba
14901720665
1552c0c213a
hex3185a5071

13293473905 has 8 divisors (see below), whose sum is σ = 15982790184. Its totient is φ = 10614364800.

The previous prime is 13293473887. The next prime is 13293473927. The reversal of 13293473905 is 50937439231.

It can be written as a sum of positive squares in 4 ways, for example, as 224640144 + 13068833761 = 14988^2 + 114319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13293473905 - 231 = 11145990257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2548926 + ... + 2554135.

It is an arithmetic number, because the mean of its divisors is an integer number (1997848773).

Almost surely, 213293473905 is an apocalyptic number.

It is an amenable number.

13293473905 is a deficient number, since it is larger than the sum of its proper divisors (2689316279).

13293473905 is an equidigital number, since it uses as much as digits as its factorization.

13293473905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103587.

The product of its (nonzero) digits is 612360, while the sum is 46.

The spelling of 13293473905 in words is "thirteen billion, two hundred ninety-three million, four hundred seventy-three thousand, nine hundred five".

Divisors: 1 5 521 2605 5103061 25515305 2658694781 13293473905