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13011545215 = 531831011391
BaseRepresentation
bin11000001111000110…
…00110110001111111
31020120210111222112001
430013203012301333
5203121423421330
65551042323131
7640303211104
oct140743066177
936523458461
1013011545215
115577750559
1226316594a7
1312c48b49a6
148b60d2aab
155124829ca
hex3078c6c7f

13011545215 has 16 divisors (see below), whose sum is σ = 16311730176. Its totient is φ = 9952077600.

The previous prime is 13011545213. The next prime is 13011545219. The reversal of 13011545215 is 51254511031.

It is not a de Polignac number, because 13011545215 - 21 = 13011545213 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 (13011545213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492831 + ... + 518560.

It is an arithmetic number, because the mean of its divisors is an integer number (1019483136).

Almost surely, 213011545215 is an apocalyptic number.

13011545215 is a deficient number, since it is larger than the sum of its proper divisors (3300184961).

13011545215 is a wasteful number, since it uses less digits than its factorization.

13011545215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011510.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 13011545215 in words is "thirteen billion, eleven million, five hundred forty-five thousand, two hundred fifteen".

Divisors: 1 5 31 83 155 415 2573 12865 1011391 5056955 31353121 83945453 156765605 419727265 2602309043 13011545215