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47139524279 = 1572291311143
BaseRepresentation
bin101011111001101111…
…000000111010110111
311111200020022221121122
4223321233000322313
51233020204234104
633353335334155
73256106226251
oct537157007267
9144606287548
1047139524279
1118aa003a331
129176b2135b
1345a325a143
1423d2886cd1
15135d6b16be
hexaf9bc0eb7

47139524279 has 8 divisors (see below), whose sum is σ = 47646972960. Its totient is φ = 46634698656.

The previous prime is 47139524251. The next prime is 47139524297. The reversal of 47139524279 is 97242593174.

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 47139524279 - 28 = 47139524023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47139524279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47139520279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619619 + ... + 691524.

It is an arithmetic number, because the mean of its divisors is an integer number (5955871620).

Almost surely, 247139524279 is an apocalyptic number.

47139524279 is a deficient number, since it is larger than the sum of its proper divisors (507448681).

47139524279 is a wasteful number, since it uses less digits than its factorization.

47139524279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311529.

The product of its digits is 3810240, while the sum is 53.

The spelling of 47139524279 in words is "forty-seven billion, one hundred thirty-nine million, five hundred twenty-four thousand, two hundred seventy-nine".

Divisors: 1 157 229 35953 1311143 205849451 300251747 47139524279