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12385993351876 = 221721035112
BaseRepresentation
bin1011010000111101011010…
…1110111110001011000100
31121212002102011200000200221
42310033112232332023010
53110413003244230001
642202014035114124
72415600314245504
oct264172656761304
947762364600627
1012385993351876
113a45963388151
1214805a4142944
136bacc0232051
1430b6b1857a04
151672c4d211a1
hexb43d6bbe2c4

12385993351876 has 27 divisors (see below), whose sum is σ = 23025741230317. Its totient is φ = 5828646443840.

The previous prime is 12385993351873. The next prime is 12385993351891. The reversal of 12385993351876 is 67815339958321.

The square root of 12385993351876 is 3519374.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9643074408900 + 2742918942976 = 3105330^2 + 1656176^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12385993351873) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 119606961 + ... + 119710471.

Almost surely, 212385993351876 is an apocalyptic number.

12385993351876 is the 3519374-th square number.

It is an amenable number.

12385993351876 is a deficient number, since it is larger than the sum of its proper divisors (10639747878441).

12385993351876 is an frugal number, since it uses more digits than its factorization.

12385993351876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207060 (or 103530 counting only the distinct ones).

The product of its digits is 293932800, while the sum is 70.

The spelling of 12385993351876 in words is "twelve trillion, three hundred eighty-five billion, nine hundred ninety-three million, three hundred fifty-one thousand, eight hundred seventy-six".

Divisors: 1 2 4 17 34 68 289 578 1156 103511 207022 414044 1759687 3519374 7038748 29914679 59829358 119658716 10714527121 21429054242 42858108484 182146961057 364293922114 728587844228 3096498337969 6192996675938 12385993351876