23154201205 has 4 divisors (see below), whose sum is σ = 27785041452. Its totient is φ = 18523360960.

The previous prime is 23154201179. The next prime is 23154201299. The reversal of 23154201205 is 50210245132.

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 15009680196 + 8144521009 = 122514^2 + 90247^2 .

It is not a de Polignac number, because 23154201205 - 2¹⁵ = 23154168437 is a prime.

It is a super-2 number, since 2×23154201205² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23154201205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2315420116 + ... + 2315420125.

It is an arithmetic number, because the mean of its divisors is an integer number (6946260363).

Almost surely, 2^23154201205 is an apocalyptic number.

It is an amenable number.

23154201205 is a deficient number, since it is larger than the sum of its proper divisors (4630840247).

23154201205 is an equidigital number, since it uses as much as digits as its factorization.

23154201205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630840246.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 23154201205 its reverse (50210245132), we get a palindrome (73364446337).

The spelling of 23154201205 in words is "twenty-three billion, one hundred fifty-four million, two hundred one thousand, two hundred five".