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13479456071 = 15189267921
BaseRepresentation
bin11001000110111000…
…00010110101000111
31021210101222022112202
430203130002311013
5210101220043241
610105315305115
7655014325514
oct144334026507
937711868482
1013479456071
11579788a944
1227422ab19b
13136a812c13
1491c2d430b
1553d5acd9b
hex323702d47

13479456071 has 4 divisors (see below), whose sum is σ = 13568724144. Its totient is φ = 13390188000.

The previous prime is 13479456049. The next prime is 13479456097. The reversal of 13479456071 is 17065497431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17065497431 = 36746499993.

It is a cyclic number.

It is not a de Polignac number, because 13479456071 - 210 = 13479455047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13479456031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44633810 + ... + 44634111.

It is an arithmetic number, because the mean of its divisors is an integer number (3392181036).

Almost surely, 213479456071 is an apocalyptic number.

13479456071 is a deficient number, since it is larger than the sum of its proper divisors (89268073).

13479456071 is an equidigital number, since it uses as much as digits as its factorization.

13479456071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89268072.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 13479456071 in words is "thirteen billion, four hundred seventy-nine million, four hundred fifty-six thousand, seventy-one".

Divisors: 1 151 89267921 13479456071