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20712235580212 = 221117204111356629
BaseRepresentation
bin1001011010110011100010…
…11100011011101100110100
32201100001220022100210001011
410231121301130123230310
510203322124302031322
6112015023014242004
74235260335405631
oct455316134335464
981301808323034
1020712235580212
1166660120221a0
1223a6205956304
13b73203649667
14518698585188
1525db8d1e5677
hex12d67171bb34

20712235580212 has 48 divisors (see below), whose sum is σ = 41869595718720. Its totient is φ = 8860408793600.

The previous prime is 20712235580173. The next prime is 20712235580243. The reversal of 20712235580212 is 21208553221702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14589114 + ... + 15945742.

It is an arithmetic number, because the mean of its divisors is an integer number (872283244140).

Almost surely, 220712235580212 is an apocalyptic number.

20712235580212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20712235580212 is an abundant number, since it is smaller than the sum of its proper divisors (21157360138508).

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

20712235580212 is a wasteful number, since it uses less digits than its factorization.

20712235580212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377072 (or 1377070 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 20712235580212 in words is "twenty trillion, seven hundred twelve billion, two hundred thirty-five million, five hundred eighty thousand, two hundred twelve".

Divisors: 1 2 4 11 17 22 34 44 68 187 374 748 20411 40822 81644 224521 346987 449042 693974 898084 1356629 1387948 2713258 3816857 5426516 7633714 14922919 15267428 23062693 29845838 46125386 59691676 92250772 253689623 507379246 1014758492 27690154519 55380309038 110760618076 304591699709 470732626823 609183399418 941465253646 1218366798836 1882930507292 5178058895053 10356117790106 20712235580212