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68715104833 = 157143739723
BaseRepresentation
bin111111111111101111…
…010100101001000001
320120100212121000001201
4333333233110221001
52111212031323313
651322311101201
74651552516414
oct777757245101
9216325530051
1068715104833
1127161981341
1211398671801
13663119a95b
14347c107b7b
151bc29060dd
hexfffbd4a41

68715104833 has 4 divisors (see below), whose sum is σ = 68758846128. Its totient is φ = 68671363540.

The previous prime is 68715104771. The next prime is 68715104837. The reversal of 68715104833 is 33840151786.

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 a de Polignac number, because none of the positive numbers 2k-68715104833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68715104837) 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 3 ways as a sum of consecutive naturals, for example, 21868291 + ... + 21871432.

It is an arithmetic number, because the mean of its divisors is an integer number (17189711532).

Almost surely, 268715104833 is an apocalyptic number.

It is an amenable number.

68715104833 is a deficient number, since it is larger than the sum of its proper divisors (43741295).

68715104833 is a wasteful number, since it uses less digits than its factorization.

68715104833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43741294.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 68715104833 in words is "sixty-eight billion, seven hundred fifteen million, one hundred four thousand, eight hundred thirty-three".

Divisors: 1 1571 43739723 68715104833