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6480641851 = 23281767037
BaseRepresentation
bin1100000100100011…
…01011111100111011
3121201122110201100021
412002101223330323
5101233021014401
62551022351311
7316411355365
oct60221537473
917648421307
106480641851
112826176162
12130a42b537
137c3833928
144569a5d35
1527de2a2a1
hex18246bf3b

6480641851 has 4 divisors (see below), whose sum is σ = 6762408912. Its totient is φ = 6198874792.

The previous prime is 6480641819. The next prime is 6480641903. The reversal of 6480641851 is 1581460846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6480641851 - 25 = 6480641819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6480641798 and 6480641807.

It is not an unprimeable number, because it can be changed into a prime (6480641351) 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, 140883496 + ... + 140883541.

It is an arithmetic number, because the mean of its divisors is an integer number (1690602228).

Almost surely, 26480641851 is an apocalyptic number.

6480641851 is a deficient number, since it is larger than the sum of its proper divisors (281767061).

6480641851 is a wasteful number, since it uses less digits than its factorization.

6480641851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281767060.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 6480641851 is about 80502.4338203510. The cubic root of 6480641851 is about 1864.4010564873.

The spelling of 6480641851 in words is "six billion, four hundred eighty million, six hundred forty-one thousand, eight hundred fifty-one".

Divisors: 1 23 281767037 6480641851