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51241183009 = 75076825787
BaseRepresentation
bin101111101110001101…
…100110011100100001
311220021002022210121221
4233232031212130201
51314420220324014
635312340215041
73462542604052
oct575615463441
9156232283557
1051241183009
111a805348235
129b2069a481
134aa7c53343
1426a1500729
1514ed817b24
hexbee366721

51241183009 has 4 divisors (see below), whose sum is σ = 51248016304. Its totient is φ = 51234349716.

The previous prime is 51241183001. The next prime is 51241183057. The reversal of 51241183009 is 90038114215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51241183009 - 23 = 51241183001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51241183001) 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, 3405387 + ... + 3420400.

It is an arithmetic number, because the mean of its divisors is an integer number (12812004076).

Almost surely, 251241183009 is an apocalyptic number.

It is an amenable number.

51241183009 is a deficient number, since it is larger than the sum of its proper divisors (6833295).

51241183009 is an equidigital number, since it uses as much as digits as its factorization.

51241183009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833294.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 51241183009 in words is "fifty-one billion, two hundred forty-one million, one hundred eighty-three thousand, nine".

Divisors: 1 7507 6825787 51241183009