6517215047 has 32 divisors (see below), whose sum is σ = 8006584320. Its totient is φ = 5177802240.

The previous prime is 6517215041. The next prime is 6517215059. The reversal of 6517215047 is 7405127156.

It is a cyclic number.

It is not a de Polignac number, because 6517215047 - 2¹² = 6517210951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6517215047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6517215041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5517797 + ... + 5518977.

It is an arithmetic number, because the mean of its divisors is an integer number (250205760).

Almost surely, 2^6517215047 is an apocalyptic number.

6517215047 is a deficient number, since it is larger than the sum of its proper divisors (1489369273).

6517215047 is a wasteful number, since it uses less digits than its factorization.

6517215047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 6517215047 is about 80729.2700759768. The cubic root of 6517215047 is about 1867.9016992345.

The spelling of 6517215047 in words is "six billion, five hundred seventeen million, two hundred fifteen thousand, forty-seven".