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57110612131220 = 2252855530606561
BaseRepresentation
bin11001111110001000110011…
…01111111011110110010100
321111012201110202100201001212
430333010121233323312110
524441200013201144340
6321244130352440552
715013051131325034
oct1477043157736624
9244181422321055
1057110612131220
111721952474a80a
1264a4504549158
1325b367a300a0b
1410162500478c4
156908a106da65
hex33f119bfbd94

57110612131220 has 12 divisors (see below), whose sum is σ = 119932285475604. Its totient is φ = 22844244852480.

The previous prime is 57110612131207. The next prime is 57110612131231. The reversal of 57110612131220 is 2213121601175.

It can be written as a sum of positive squares in 2 ways, for example, as 13476079476484 + 43634532654736 = 3670978^2 + 6605644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427765303261 + ... + 1427765303300.

It is an arithmetic number, because the mean of its divisors is an integer number (9994357122967).

Almost surely, 257110612131220 is an apocalyptic number.

It is an amenable number.

57110612131220 is an abundant number, since it is smaller than the sum of its proper divisors (62821673344384).

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

57110612131220 is a wasteful number, since it uses less digits than its factorization.

57110612131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855530606570 (or 2855530606568 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

Adding to 57110612131220 its reverse (2213121601175), we get a palindrome (59323733732395).

The spelling of 57110612131220 in words is "fifty-seven trillion, one hundred ten billion, six hundred twelve million, one hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 2855530606561 5711061213122 11422122426244 14277653032805 28555306065610 57110612131220