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68246624401 = 99787683923
BaseRepresentation
bin111111100011110100…
…001101100010010001
320112011020001201201121
4333203310031202101
52104232113440101
651204014002241
74634133510304
oct774364154221
9215136051647
1068246624401
1126a4149302a
12112877a6381
1365881003b7
143435bd8b3b
151b967170a1
hexfe3d0d891

68246624401 has 4 divisors (see below), whose sum is σ = 68247408112. Its totient is φ = 68245840692.

The previous prime is 68246624393. The next prime is 68246624441. The reversal of 68246624401 is 10442664286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68246624401 - 23 = 68246624393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68246624441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242175 + ... + 441748.

It is an arithmetic number, because the mean of its divisors is an integer number (17061852028).

Almost surely, 268246624401 is an apocalyptic number.

It is an amenable number.

68246624401 is a deficient number, since it is larger than the sum of its proper divisors (783711).

68246624401 is an equidigital number, since it uses as much as digits as its factorization.

68246624401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783710.

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 68246624401 in words is "sixty-eight billion, two hundred forty-six million, six hundred twenty-four thousand, four hundred one".

Divisors: 1 99787 683923 68246624401