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13125015789 = 326344937049
BaseRepresentation
bin11000011100100111…
…11101100011101101
31020212201000212212220
430032103331203231
5203340001001124
610010214345553
7643151536104
oct141623754355
936781025786
1013125015789
115625802696
12266365b2b9
131312263942
148c71cd03b
1551c3e8879
hex30e4fd8ed

13125015789 has 16 divisors (see below), whose sum is σ = 17606160000. Its totient is φ = 8697092096.

The previous prime is 13125015731. The next prime is 13125015797. The reversal of 13125015789 is 98751052131.

It is a cyclic number.

It is not a de Polignac number, because 13125015789 - 224 = 13108238573 is a prime.

It is a super-2 number, since 2×131250157892 (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13125015789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125015889) 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, 335737 + ... + 372785.

It is an arithmetic number, because the mean of its divisors is an integer number (1100385000).

Almost surely, 213125015789 is an apocalyptic number.

It is an amenable number.

13125015789 is a deficient number, since it is larger than the sum of its proper divisors (4481144211).

13125015789 is a wasteful number, since it uses less digits than its factorization.

13125015789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37764.

The product of its (nonzero) digits is 75600, while the sum is 42.

The spelling of 13125015789 in words is "thirteen billion, one hundred twenty-five million, fifteen thousand, seven hundred eighty-nine".

Divisors: 1 3 263 449 789 1347 37049 111147 118087 354261 9743887 16635001 29231661 49905003 4375005263 13125015789