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102158247305 = 517282785487
BaseRepresentation
bin101111100100100011…
…0110010010110001001
3100202200120202122222002
41133021012302112021
53133210002403210
6114533021440345
710244401526462
oct1371106622611
9322616678862
10102158247305
113a363738264
12179707100b5
1398309b285a
144d3194dd69
1529cd95a4a5
hex17c91b2589

102158247305 has 24 divisors (see below), whose sum is σ = 130384245888. Its totient is φ = 76825242368.

The previous prime is 102158247287. The next prime is 102158247313. The reversal of 102158247305 is 503742851201.

It is not a de Polignac number, because 102158247305 - 28 = 102158247049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1152272 + ... + 1237758.

It is an arithmetic number, because the mean of its divisors is an integer number (5432676912).

Almost surely, 2102158247305 is an apocalyptic number.

It is an amenable number.

102158247305 is a deficient number, since it is larger than the sum of its proper divisors (28225998583).

102158247305 is an equidigital number, since it uses as much as digits as its factorization.

102158247305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86353 (or 86336 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 102158247305 in words is "one hundred two billion, one hundred fifty-eight million, two hundred forty-seven thousand, three hundred five".

Divisors: 1 5 17 85 289 827 1445 4135 14059 70295 85487 239003 427435 1195015 1453279 7266395 24705743 70697749 123528715 353488745 1201861733 6009308665 20431649461 102158247305