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13145305453 = 715131339733
BaseRepresentation
bin11000011111000010…
…10111000101101101
31020221010012201001221
430033201113011231
5203410144233303
610012221303341
7643516152460
oct141741270555
936833181057
1013145305453
115636200605
12266a404b51
131316518b67
148c9b912d7
1551e0a54bd
hex30f85716d

13145305453 has 16 divisors (see below), whose sum is σ = 15171394816. Its totient is φ = 11156745600.

The previous prime is 13145305447. The next prime is 13145305469. The reversal of 13145305453 is 35450354131.

It is not a de Polignac number, because 13145305453 - 229 = 12608434541 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 (13145305423) 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, 310975 + ... + 350707.

It is an arithmetic number, because the mean of its divisors is an integer number (948212176).

Almost surely, 213145305453 is an apocalyptic number.

It is an amenable number.

13145305453 is a deficient number, since it is larger than the sum of its proper divisors (2026089363).

13145305453 is a wasteful number, since it uses less digits than its factorization.

13145305453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40204.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 13145305453 its reverse (35450354131), we get a palindrome (48595659584).

The spelling of 13145305453 in words is "thirteen billion, one hundred forty-five million, three hundred five thousand, four hundred fifty-three".

Divisors: 1 7 151 313 1057 2191 39733 47263 278131 330841 5999683 12436429 41997781 87055003 1877900779 13145305453