8665000421001 has 4 divisors (see below), whose sum is σ = 11553333894672. Its totient is φ = 5776666947332.

The previous prime is 8665000420981. The next prime is 8665000421017. The reversal of 8665000421001 is 1001240005668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8665000421001 - 2¹⁴ = 8665000404617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8665000426001) 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, 1444166736831 + ... + 1444166736836.

It is an arithmetic number, because the mean of its divisors is an integer number (2888333473668).

Almost surely, 2^{8665000421001} is an apocalyptic number.

It is an amenable number.

8665000421001 is a deficient number, since it is larger than the sum of its proper divisors (2888333473671).

8665000421001 is a wasteful number, since it uses less digits than its factorization.

8665000421001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888333473670.

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 8665000421001 its reverse (1001240005668), we get a palindrome (9666240426669).

The spelling of 8665000421001 in words is "eight trillion, six hundred sixty-five billion, four hundred twenty-one thousand, one".