2271923597989 has 4 divisors (see below), whose sum is σ = 2271935312140. Its totient is φ = 2271911883840.

The previous prime is 2271923597981. The next prime is 2271923598001. The reversal of 2271923597989 is 9897953291722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 791219145025 + 1480704452964 = 889505^2 + 1216842^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271923597989 - 2³ = 2271923597981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271923597981) 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, 5561172 + ... + 5955709.

It is an arithmetic number, because the mean of its divisors is an integer number (567983828035).

Almost surely, 2^{2271923597989} is an apocalyptic number.

It is an amenable number.

2271923597989 is a deficient number, since it is larger than the sum of its proper divisors (11714151).

2271923597989 is a wasteful number, since it uses less digits than its factorization.

2271923597989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11714150.

The product of its digits is 308629440, while the sum is 73.

The spelling of 2271923597989 in words is "two trillion, two hundred seventy-one billion, nine hundred twenty-three million, five hundred ninety-seven thousand, nine hundred eighty-nine".