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68210426726 = 2133184628321
BaseRepresentation
bin111111100001101010…
…001000001101100110
320112001200221200211222
4333201222020031212
52104143332123401
651200242100342
74633214026601
oct774152101546
9215050850758
1068210426726
1126a2300a1a2
121127764a6b2
136580768460
143431095338
151b93466c1b
hexfe1a88366

68210426726 has 16 divisors (see below), whose sum is σ = 113740464768. Its totient is φ = 30466195200.

The previous prime is 68210426707. The next prime is 68210426743. The reversal of 68210426726 is 62762401286.

68210426726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42313355 + ... + 42314966.

It is an arithmetic number, because the mean of its divisors is an integer number (7108779048).

Almost surely, 268210426726 is an apocalyptic number.

68210426726 is a deficient number, since it is larger than the sum of its proper divisors (45530038042).

68210426726 is a wasteful number, since it uses less digits than its factorization.

68210426726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84628367.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 68210426726 in words is "sixty-eight billion, two hundred ten million, four hundred twenty-six thousand, seven hundred twenty-six".

Divisors: 1 2 13 26 31 62 403 806 84628321 169256642 1100168173 2200336346 2623477951 5246955902 34105213363 68210426726