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20712470310770 = 257253517899523
BaseRepresentation
bin1001011010110011111110…
…11011110110111101110010
32201100002111200001022211112
410231121333123312331302
510203323114344421040
6112015102201313322
74235266215523400
oct455317733667562
981302450038745
1020712470310770
116666122576797
1223a6270495842
13b73240173b94
145186bb808470
1525dba3b10365
hex12d67f6f6f72

20712470310770 has 48 divisors (see below), whose sum is σ = 43377487011648. Its totient is φ = 7100090373600.

The previous prime is 20712470310769. The next prime is 20712470310809. The reversal of 20712470310770 is 7701307421702.

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, 1327772 + ... + 6571751.

It is an arithmetic number, because the mean of its divisors is an integer number (903697646076).

Almost surely, 220712470310770 is an apocalyptic number.

20712470310770 is an abundant number, since it is smaller than the sum of its proper divisors (22665016700878).

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

20712470310770 is a wasteful number, since it uses less digits than its factorization.

20712470310770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7904895 (or 7904888 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 41.

The spelling of 20712470310770 in words is "twenty trillion, seven hundred twelve billion, four hundred seventy million, three hundred ten thousand, seven hundred seventy".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 5351 10702 26755 37457 53510 74914 187285 262199 374570 524398 1310995 2621990 7899523 15799046 39497615 55296661 78995230 110593322 276483305 387076627 552966610 774153254 1935383135 3870766270 42270347573 84540695146 211351737865 295892433011 422703475730 591784866022 1479462165055 2071247031077 2958924330110 4142494062154 10356235155385 20712470310770