6501571047 has 12 divisors (see below), whose sum is σ = 9482335824. Its totient is φ = 4292298720.

The previous prime is 6501570979. The next prime is 6501571079. The reversal of 6501571047 is 7401751056.

It is not a de Polignac number, because 6501571047 - 2⁷ = 6501570919 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501571247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3505854 + ... + 3507707.

It is an arithmetic number, because the mean of its divisors is an integer number (790194652).

Almost surely, 2^6501571047 is an apocalyptic number.

6501571047 is a deficient number, since it is larger than the sum of its proper divisors (2980764777).

6501571047 is a wasteful number, since it uses less digits than its factorization.

6501571047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013670 (or 7013667 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 6501571047 is about 80632.3201142073. The cubic root of 6501571047 is about 1866.4059240004.

Subtracting 6501571047 from its reverse (7401751056), we obtain a square (900180009 = 30003²).

The spelling of 6501571047 in words is "six billion, five hundred one million, five hundred seventy-one thousand, forty-seven".