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57516112121978 = 2127618613660487
BaseRepresentation
bin11010001001111100000110…
…11011101001000001111010
321112122111010202010120000002
431010332003123221001322
530014320444200400403
6322154312004513002
715054254606351366
oct1504760333510172
9245574122116002
1057516112121978
111736549a93a614
12654b0116ab762
13261299124b753
14102bb1a8602a6
1569b1d5734188
hex344f836e907a

57516112121978 has 16 divisors (see below), whose sum is σ = 86954921723904. Its totient is φ = 28531145658960.

The previous prime is 57516112121873. The next prime is 57516112121981. The reversal of 57516112121978 is 87912121161575.

57516112121978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13882451 + ... + 17542937.

It is an arithmetic number, because the mean of its divisors is an integer number (5434682607744).

Almost surely, 257516112121978 is an apocalyptic number.

57516112121978 is a deficient number, since it is larger than the sum of its proper divisors (29438809601926).

57516112121978 is a wasteful number, since it uses less digits than its factorization.

57516112121978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722477.

The product of its digits is 2116800, while the sum is 56.

The spelling of 57516112121978 in words is "fifty-seven trillion, five hundred sixteen billion, one hundred twelve million, one hundred twenty-one thousand, nine hundred seventy-eight".

Divisors: 1 2 127 254 61861 123722 3660487 7320974 7856347 15712694 464881849 929763698 226441386307 452882772614 28758056060989 57516112121978