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68235811934 = 240983417863
BaseRepresentation
bin111111100011001010…
…111101110001011110
320112010110201101210212
4333203022331301132
52104221331440214
651202550132422
74633642555133
oct774312756136
9215113641725
1068235811934
1126a36378504
1211284051112
136585ab5aa4
1434345c258a
151b957cd53e
hexfe32bdc5e

68235811934 has 8 divisors (see below), whose sum is σ = 102603972720. Its totient is φ = 34034487696.

The previous prime is 68235811837. The next prime is 68235811939. The reversal of 68235811934 is 43911853286.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×682358119342 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68235811939) 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, 41708114 + ... + 41709749.

It is an arithmetic number, because the mean of its divisors is an integer number (12825496590).

Almost surely, 268235811934 is an apocalyptic number.

68235811934 is a deficient number, since it is larger than the sum of its proper divisors (34368160786).

68235811934 is a wasteful number, since it uses less digits than its factorization.

68235811934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83418274.

The product of its digits is 1244160, while the sum is 50.

The spelling of 68235811934 in words is "sixty-eight billion, two hundred thirty-five million, eight hundred eleven thousand, nine hundred thirty-four".

Divisors: 1 2 409 818 83417863 166835726 34117905967 68235811934