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157143228712 = 23171960813943
BaseRepresentation
bin1001001001011001110…
…1110110000100101000
3120000121120201010111221
42102112131312010220
510033312131304322
6200105100431424
714232104255641
oct2222635660450
9500546633457
10157143228712
116070a28a658
1226556b48574
1311a84453202
14786a3526c8
15414ac8b9c7
hex2496776128

157143228712 has 32 divisors (see below), whose sum is σ = 328395297600. Its totient is φ = 70057661184.

The previous prime is 157143228629. The next prime is 157143228787. The reversal of 157143228712 is 217822341751.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30404388 + ... + 30409555.

It is an arithmetic number, because the mean of its divisors is an integer number (10262353050).

Almost surely, 2157143228712 is an apocalyptic number.

It is an amenable number.

157143228712 is an abundant number, since it is smaller than the sum of its proper divisors (171252068888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157143228712 is a wasteful number, since it uses less digits than its factorization.

157143228712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60813985 (or 60813981 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The spelling of 157143228712 in words is "one hundred fifty-seven billion, one hundred forty-three million, two hundred twenty-eight thousand, seven hundred twelve".

Divisors: 1 2 4 8 17 19 34 38 68 76 136 152 323 646 1292 2584 60813943 121627886 243255772 486511544 1033837031 1155464917 2067674062 2310929834 4135348124 4621859668 8270696248 9243719336 19642903589 39285807178 78571614356 157143228712