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13115443161425 = 521153899858879
BaseRepresentation
bin1011111011011010110101…
…0101001010100101010001
31201102211020210011202101212
42332312231111022211101
53204340411422131200
643521052412105505
72522362623314213
oct276665525124521
951384223152355
1013115443161425
1141a7256822620
121579a3b465295
13741a1ca87ca7
14334b100a85b3
1517b269573035
hexbedad54a951

13115443161425 has 24 divisors (see below), whose sum is σ = 18076365181440. Its totient is φ = 9358532331200.

The previous prime is 13115443161413. The next prime is 13115443161427. The reversal of 13115443161425 is 52416134451131.

It is not a de Polignac number, because 13115443161425 - 240 = 12015931533649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13115443161427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 449914865 + ... + 449944014.

It is an arithmetic number, because the mean of its divisors is an integer number (753181882560).

Almost surely, 213115443161425 is an apocalyptic number.

It is an amenable number.

13115443161425 is a deficient number, since it is larger than the sum of its proper divisors (4960922020015).

13115443161425 is a wasteful number, since it uses less digits than its factorization.

13115443161425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899858953 (or 899858948 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The spelling of 13115443161425 in words is "thirteen trillion, one hundred fifteen billion, four hundred forty-three million, one hundred sixty-one thousand, four hundred twenty-five".

Divisors: 1 5 11 25 53 55 265 275 583 1325 2915 14575 899858879 4499294395 9898447669 22496471975 47692520587 49492238345 238462602935 247461191725 524617726457 1192313014675 2623088632285 13115443161425