23723851205 has 16 divisors (see below), whose sum is σ = 28545577200. Its totient is φ = 18927836160.

The previous prime is 23723851201. The next prime is 23723851211. The reversal of 23723851205 is 50215832732.

It can be written as a sum of positive squares in 8 ways, for example, as 1967011201 + 21756840004 = 44351^2 + 147502^2 .

It is not a de Polignac number, because 23723851205 - 2² = 23723851201 is a prime.

It is a super-2 number, since 2×23723851205² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23723851201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4733741 + ... + 4738749.

It is an arithmetic number, because the mean of its divisors is an integer number (1784098575).

Almost surely, 2^23723851205 is an apocalyptic number.

It is an amenable number.

23723851205 is a deficient number, since it is larger than the sum of its proper divisors (4821725995).

23723851205 is a wasteful number, since it uses less digits than its factorization.

23723851205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7384.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 23723851205 in words is "twenty-three billion, seven hundred twenty-three million, eight hundred fifty-one thousand, two hundred five".