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68271212253 = 3227100251413
BaseRepresentation
bin111111100101010010…
…000000011011011101
320112012221022220220210
4333211102000123131
52104304412243003
651210253003033
74634552505066
oct774522003335
9215187286823
1068271212253
1126a54357272
1211293a83479
13659022bb1a
14343919956d
151b98972503
hexfe54806dd

68271212253 has 8 divisors (see below), whose sum is σ = 91429289568. Its totient is φ = 45313638224.

The previous prime is 68271212249. The next prime is 68271212287. The reversal of 68271212253 is 35221217286.

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

It is a cyclic number.

It is not a de Polignac number, because 68271212253 - 22 = 68271212249 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68271212153) 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 7 ways as a sum of consecutive naturals, for example, 50125026 + ... + 50126387.

It is an arithmetic number, because the mean of its divisors is an integer number (11428661196).

Almost surely, 268271212253 is an apocalyptic number.

It is an amenable number.

68271212253 is a deficient number, since it is larger than the sum of its proper divisors (23158077315).

68271212253 is a wasteful number, since it uses less digits than its factorization.

68271212253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100251643.

The product of its digits is 80640, while the sum is 39.

The spelling of 68271212253 in words is "sixty-eight billion, two hundred seventy-one million, two hundred twelve thousand, two hundred fifty-three".

Divisors: 1 3 227 681 100251413 300754239 22757070751 68271212253