6501669009 has 16 divisors (see below), whose sum is σ = 9465937344. Its totient is φ = 3936670400.

The previous prime is 6501668981. The next prime is 6501669017. The reversal of 6501669009 is 9009661056.

It is a cyclic number.

It is not a de Polignac number, because 6501669009 - 2¹³ = 6501660817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6501669059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57834 + ... + 127859.

It is an arithmetic number, because the mean of its divisors is an integer number (591621084).

Almost surely, 2^6501669009 is an apocalyptic number.

It is an amenable number.

6501669009 is a deficient number, since it is larger than the sum of its proper divisors (2964268335).

6501669009 is a wasteful number, since it uses less digits than its factorization.

6501669009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186768.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 6501669009 is about 80632.9275730455. The cubic root of 6501669009 is about 1866.4152979368.

The spelling of 6501669009 in words is "six billion, five hundred one million, six hundred sixty-nine thousand, nine".