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13040054145 = 325289778981
BaseRepresentation
bin11000010010011111…
…10110111110000001
31020122210011101102100
430021033312332001
5203201223213040
65553541341013
7641100426366
oct141117667601
936583141370
1013040054145
115591852758
12263b107769
1312ca787091
148b9bd446d
15514c14b30
hex3093f6f81

13040054145 has 12 divisors (see below), whose sum is σ = 22602760596. Its totient is φ = 6954695520.

The previous prime is 13040054123. The next prime is 13040054161. The reversal of 13040054145 is 54145004031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2383001856 + 10657052289 = 48816^2 + 103233^2 .

It is not a de Polignac number, because 13040054145 - 25 = 13040054113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144889446 + ... + 144889535.

It is an arithmetic number, because the mean of its divisors is an integer number (1883563383).

Almost surely, 213040054145 is an apocalyptic number.

13040054145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13040054145 is a deficient number, since it is larger than the sum of its proper divisors (9562706451).

13040054145 is a wasteful number, since it uses less digits than its factorization.

13040054145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289778992 (or 289778989 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 13040054145 its reverse (54145004031), we get a palindrome (67185058176).

The spelling of 13040054145 in words is "thirteen billion, forty million, fifty-four thousand, one hundred forty-five".

Divisors: 1 3 5 9 15 45 289778981 869336943 1448894905 2608010829 4346684715 13040054145