20460664243223 has 4 divisors (see below), whose sum is σ = 20461935344880. Its totient is φ = 20459393141568.

The previous prime is 20460664243199. The next prime is 20460664243277. The reversal of 20460664243223 is 32234246606402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20460664243223 - 2²⁶ = 20460597134359 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 (20460664443223) 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, 635526683 + ... + 635558876.

It is an arithmetic number, because the mean of its divisors is an integer number (5115483836220).

Almost surely, 2^{20460664243223} is an apocalyptic number.

20460664243223 is a deficient number, since it is larger than the sum of its proper divisors (1271101657).

20460664243223 is a wasteful number, since it uses less digits than its factorization.

20460664243223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271101656.

The product of its (nonzero) digits is 1990656, while the sum is 44.

The spelling of 20460664243223 in words is "twenty trillion, four hundred sixty billion, six hundred sixty-four million, two hundred forty-three thousand, two hundred twenty-three".