23218650001 has 4 divisors (see below), whose sum is σ = 23221364404. Its totient is φ = 23215935600.

The previous prime is 23218649977. The next prime is 23218650011. The reversal of 23218650001 is 10005681232.

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 1960718400 + 21257931601 = 44280^2 + 145801^2 .

It is a cyclic number.

It is not a de Polignac number, because 23218650001 - 2⁷ = 23218649873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23218650011) 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, 1344330 + ... + 1361491.

It is an arithmetic number, because the mean of its divisors is an integer number (5805341101).

Almost surely, 2^23218650001 is an apocalyptic number.

It is an amenable number.

23218650001 is a deficient number, since it is larger than the sum of its proper divisors (2714403).

23218650001 is an equidigital number, since it uses as much as digits as its factorization.

23218650001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714402.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 23218650001 in words is "twenty-three billion, two hundred eighteen million, six hundred fifty thousand, one".