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13145714591 = 103127628297
BaseRepresentation
bin11000011111000101…
…11010111110011111
31020221010222111022012
430033202322332133
5203410300331331
610012234141435
7643522505342
oct141742727637
936833874265
1013145714591
11563645aa39
12266a58187b
131316630159
148c9c5a459
1551e13682b
hex30f8baf9f

13145714591 has 4 divisors (see below), whose sum is σ = 13273342992. Its totient is φ = 13018086192.

The previous prime is 13145714581. The next prime is 13145714609. The reversal of 13145714591 is 19541754131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19541754131 = 33641580891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13145714591 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 (13145714521) 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, 63814046 + ... + 63814251.

It is an arithmetic number, because the mean of its divisors is an integer number (3318335748).

Almost surely, 213145714591 is an apocalyptic number.

13145714591 is a deficient number, since it is larger than the sum of its proper divisors (127628401).

13145714591 is a wasteful number, since it uses less digits than its factorization.

13145714591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127628400.

The product of its digits is 75600, while the sum is 41.

The spelling of 13145714591 in words is "thirteen billion, one hundred forty-five million, seven hundred fourteen thousand, five hundred ninety-one".

Divisors: 1 103 127628297 13145714591