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68202342278 = 2719256399783
BaseRepresentation
bin111111100001001011…
…010010011110000110
320112001010201222001222
4333201023102132012
52104134244423103
651155352520342
74633055226020
oct774113223606
9215033658058
1068202342278
1126a19498234
12112749b00b2
13657bb97765
14342dd8d010
151b928bb638
hexfe12d2786

68202342278 has 16 divisors (see below), whose sum is σ = 123071896320. Its totient is φ = 27691176456.

The previous prime is 68202342233. The next prime is 68202342323. The reversal of 68202342278 is 87224320286.

It is an interprime number because it is at equal distance from previous prime (68202342233) and next prime (68202342323).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 128199626 + ... + 128200157.

It is an arithmetic number, because the mean of its divisors is an integer number (7691993520).

Almost surely, 268202342278 is an apocalyptic number.

68202342278 is a deficient number, since it is larger than the sum of its proper divisors (54869554042).

68202342278 is a wasteful number, since it uses less digits than its factorization.

68202342278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256399811.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 68202342278 in words is "sixty-eight billion, two hundred two million, three hundred forty-two thousand, two hundred seventy-eight".

Divisors: 1 2 7 14 19 38 133 266 256399783 512799566 1794798481 3589596962 4871595877 9743191754 34101171139 68202342278