809150650501001 has 4 divisors (see below), whose sum is σ = 809155067373072. Its totient is φ = 809146233628932.

The previous prime is 809150650500977. The next prime is 809150650501007. The reversal of 809150650501001 is 100105056051908.

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 809150650501001 - 2⁴² = 804752603989897 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 809150650501001.

It is not an unprimeable number, because it can be changed into a prime (809150650501007) 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, 2208161231 + ... + 2208527636.

It is an arithmetic number, because the mean of its divisors is an integer number (202288766843268).

Almost surely, 2^{809150650501001} is an apocalyptic number.

It is an amenable number.

809150650501001 is a deficient number, since it is larger than the sum of its proper divisors (4416872071).

809150650501001 is a wasteful number, since it uses less digits than its factorization.

809150650501001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416872070.

The product of its (nonzero) digits is 54000, while the sum is 41.

The spelling of 809150650501001 in words is "eight hundred nine trillion, one hundred fifty billion, six hundred fifty million, five hundred one thousand, one".