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51917600711 = 484871070753
BaseRepresentation
bin110000010110100001…
…111011011111000111
311222000020010101021102
4300112201323133013
51322311401210321
635503422210315
73515365216244
oct602641733707
9158006111242
1051917600711
112002214a929
12a08b12399b
134b851268c2
14272729a5cb
15153cdccc0b
hexc1687b7c7

51917600711 has 4 divisors (see below), whose sum is σ = 51918719952. Its totient is φ = 51916481472.

The previous prime is 51917600633. The next prime is 51917600729. The reversal of 51917600711 is 11700671915.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11700671915 = 52340134383.

It is a cyclic number.

It is not a de Polignac number, because 51917600711 - 234 = 34737731527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51917600611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486890 + ... + 583863.

It is an arithmetic number, because the mean of its divisors is an integer number (12979679988).

Almost surely, 251917600711 is an apocalyptic number.

51917600711 is a deficient number, since it is larger than the sum of its proper divisors (1119241).

51917600711 is a wasteful number, since it uses less digits than its factorization.

51917600711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119240.

The product of its (nonzero) digits is 13230, while the sum is 38.

The spelling of 51917600711 in words is "fifty-one billion, nine hundred seventeen million, six hundred thousand, seven hundred eleven".

Divisors: 1 48487 1070753 51917600711