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13012552155 = 352950359471
BaseRepresentation
bin11000001111001101…
…11100100111011011
31020120212102010210010
430013212330213123
5203122203132110
65551120053003
7640314603561
oct140746744733
936525363703
1013012552155
115578279039
122631a64163
1312c4b78105
148b62b5a31
155125d1020
hex3079bc9db

13012552155 has 32 divisors (see below), whose sum is σ = 21581199360. Its totient is φ = 6687282560.

The previous prime is 13012552153. The next prime is 13012552169. The reversal of 13012552155 is 55125521031.

It is not a de Polignac number, because 13012552155 - 21 = 13012552153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13012552153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189070 + ... + 248540.

It is an arithmetic number, because the mean of its divisors is an integer number (674412480).

Almost surely, 213012552155 is an apocalyptic number.

13012552155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13012552155 is a deficient number, since it is larger than the sum of its proper divisors (8568647205).

13012552155 is a wasteful number, since it uses less digits than its factorization.

13012552155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60011.

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 13012552155 in words is "thirteen billion, twelve million, five hundred fifty-two thousand, one hundred fifty-five".

Divisors: 1 3 5 15 29 87 145 435 503 1509 2515 7545 14587 43761 59471 72935 178413 218805 297355 892065 1724659 5173977 8623295 25869885 29913913 89741739 149569565 448708695 867503477 2602510431 4337517385 13012552155