23072642453221 has 4 divisors (see below), whose sum is σ = 23074481362912. Its totient is φ = 23070803543532.

The previous prime is 23072642453171. The next prime is 23072642453251. The reversal of 23072642453221 is 12235424627032.

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 23072642453221 - 2⁹ = 23072642452709 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 (23072642453251) 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, 919436025 + ... + 919461118.

It is an arithmetic number, because the mean of its divisors is an integer number (5768620340728).

Almost surely, 2^{23072642453221} is an apocalyptic number.

It is an amenable number.

23072642453221 is a deficient number, since it is larger than the sum of its proper divisors (1838909691).

23072642453221 is a wasteful number, since it uses less digits than its factorization.

23072642453221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838909690.

The product of its (nonzero) digits is 967680, while the sum is 43.

The spelling of 23072642453221 in words is "twenty-three trillion, seventy-two billion, six hundred forty-two million, four hundred fifty-three thousand, two hundred twenty-one".