6499115671 has 4 divisors (see below), whose sum is σ = 6515323344. Its totient is φ = 6482908000.

The previous prime is 6499115669. The next prime is 6499115687. The reversal of 6499115671 is 1765119946.

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 6499115671 - 2¹ = 6499115669 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 (6499115611) 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, 8103235 + ... + 8104036.

It is an arithmetic number, because the mean of its divisors is an integer number (1628830836).

Almost surely, 2^6499115671 is an apocalyptic number.

6499115671 is a deficient number, since it is larger than the sum of its proper divisors (16207673).

6499115671 is a wasteful number, since it uses less digits than its factorization.

6499115671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16207672.

The product of its digits is 408240, while the sum is 49.

The square root of 6499115671 is about 80617.0929207944. The cubic root of 6499115671 is about 1866.1709394968.

The spelling of 6499115671 in words is "six billion, four hundred ninety-nine million, one hundred fifteen thousand, six hundred seventy-one".