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13237142956 = 2217194663867
BaseRepresentation
bin11000101001111111…
…01100010110101100
31021011112000112102221
430110333230112230
5204102202033311
610025301525124
7646012600342
oct142477542654
937145015387
1013237142956
115683027474
1226951137a4
13132c56228b
148d8059992
15527196671
hex314fec5ac

13237142956 has 12 divisors (see below), whose sum is σ = 24527647368. Its totient is φ = 6229243712.

The previous prime is 13237142911. The next prime is 13237142959. The reversal of 13237142956 is 65924173231.

It is not an unprimeable number, because it can be changed into a prime (13237142959) 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 3 ways as a sum of consecutive naturals, for example, 97331866 + ... + 97332001.

It is an arithmetic number, because the mean of its divisors is an integer number (2043970614).

Almost surely, 213237142956 is an apocalyptic number.

It is an amenable number.

13237142956 is a deficient number, since it is larger than the sum of its proper divisors (11290504412).

13237142956 is a wasteful number, since it uses less digits than its factorization.

13237142956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194663888 (or 194663886 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The spelling of 13237142956 in words is "thirteen billion, two hundred thirty-seven million, one hundred forty-two thousand, nine hundred fifty-six".

Divisors: 1 2 4 17 34 68 194663867 389327734 778655468 3309285739 6618571478 13237142956