8506764609721 has 8 divisors (see below), whose sum is σ = 9722129538560. Its totient is φ = 7291427891328.

The previous prime is 8506764609659. The next prime is 8506764609727. The reversal of 8506764609721 is 1279064676058.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8506764609721 - 2⁷ = 8506764609593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8506764609721.

It is not an unprimeable number, because it can be changed into a prime (8506764609727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6402441 + ... + 7616086.

It is an arithmetic number, because the mean of its divisors is an integer number (1215266192320).

Almost surely, 2^{8506764609721} is an apocalyptic number.

It is an amenable number.

8506764609721 is a deficient number, since it is larger than the sum of its proper divisors (1215364928839).

8506764609721 is a wasteful number, since it uses less digits than its factorization.

8506764609721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14105223.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 8506764609721 in words is "eight trillion, five hundred six billion, seven hundred sixty-four million, six hundred nine thousand, seven hundred twenty-one".