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57516112121980 = 22512704832263553
BaseRepresentation
bin11010001001111100000110…
…11011101001000001111100
321112122111010202010120000011
431010332003123221001330
530014320444200400410
6322154312004513004
715054254606351401
oct1504760333510174
9245574122116004
1057516112121980
111736549a93a616
12654b0116ab764
13261299124b755
14102bb1a8602a8
1569b1d573418a
hex344f836e907c

57516112121980 has 24 divisors (see below), whose sum is σ = 120783983885712. Its totient is φ = 23006416576512.

The previous prime is 57516112121873. The next prime is 57516112121981. The reversal of 57516112121980 is 8912121161575.

It is a happy number.

57516112121980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57516112121981) by changing a digit.

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, 24277884 + ... + 26541436.

It is an arithmetic number, because the mean of its divisors is an integer number (5032665995238).

Almost surely, 257516112121980 is an apocalyptic number.

It is an amenable number.

57516112121980 is an abundant number, since it is smaller than the sum of its proper divisors (63267871763732).

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

57516112121980 is a wasteful number, since it uses less digits than its factorization.

57516112121980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534045 (or 3534043 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 49.

The spelling of 57516112121980 in words is "fifty-seven trillion, five hundred sixteen billion, one hundred twelve million, one hundred twenty-one thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 1270483 2263553 2540966 4527106 5081932 6352415 9054212 11317765 12704830 22635530 25409660 45271060 2875805606099 5751611212198 11503222424396 14379028030495 28758056060990 57516112121980