23781065273 has 4 divisors (see below), whose sum is σ = 27178360320. Its totient is φ = 20383770228.

The previous prime is 23781065267. The next prime is 23781065293. The reversal of 23781065273 is 37256018732.

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 23781065273 - 2¹² = 23781061177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23781065233) 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, 1698647513 + ... + 1698647526.

It is an arithmetic number, because the mean of its divisors is an integer number (6794590080).

Almost surely, 2^23781065273 is an apocalyptic number.

It is an amenable number.

23781065273 is a deficient number, since it is larger than the sum of its proper divisors (3397295047).

23781065273 is an equidigital number, since it uses as much as digits as its factorization.

23781065273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397295046.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 23781065273 in words is "twenty-three billion, seven hundred eighty-one million, sixty-five thousand, two hundred seventy-three".