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12712847251868 = 2219947993327967
BaseRepresentation
bin1011100011111111000010…
…1111101001100110011100
31200000100002011221111221122
42320333300233221212130
53131241402344024433
643012111300350112
72451321130456601
oct270776057514634
950010064844848
1012712847251868
114061540939a25
121513a029a5338
13712a7c6a97ba
1431d43b24a6a8
15170a54d06198
hexb8ff0be999c

12712847251868 has 24 divisors (see below), whose sum is σ = 22363944960000. Its totient is φ = 6323162023728.

The previous prime is 12712847251861. The next prime is 12712847251933. The reversal of 12712847251868 is 86815274821721.

It is a self number, because there is not a number n which added to its sum of digits gives 12712847251868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12712847251861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2156021 + ... + 5483987.

It is an arithmetic number, because the mean of its divisors is an integer number (931831040000).

Almost surely, 212712847251868 is an apocalyptic number.

It is an amenable number.

12712847251868 is a deficient number, since it is larger than the sum of its proper divisors (9651097708132).

12712847251868 is a wasteful number, since it uses less digits than its factorization.

12712847251868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332969 (or 3332967 counting only the distinct ones).

The product of its digits is 24084480, while the sum is 62.

The spelling of 12712847251868 in words is "twelve trillion, seven hundred twelve billion, eight hundred forty-seven million, two hundred fifty-one thousand, eight hundred sixty-eight".

Divisors: 1 2 4 199 398 796 4799 9598 19196 955001 1910002 3327967 3820004 6655934 13311868 662265433 1324530866 2649061732 15970913633 31941827266 63883654532 3178211812967 6356423625934 12712847251868