862172240009 has 4 divisors (see below), whose sum is σ = 862704775440. Its totient is φ = 861639704580.

The previous prime is 862172239993. The next prime is 862172240029. The reversal of 862172240009 is 900042271268.

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 862172240009 - 2⁴ = 862172239993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (862172240029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266265287 + ... + 266268524.

It is an arithmetic number, because the mean of its divisors is an integer number (215676193860).

Almost surely, 2^862172240009 is an apocalyptic number.

It is an amenable number.

862172240009 is a deficient number, since it is larger than the sum of its proper divisors (532535431).

862172240009 is a wasteful number, since it uses less digits than its factorization.

862172240009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532535430.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 862172240009 in words is "eight hundred sixty-two billion, one hundred seventy-two million, two hundred forty thousand, nine".