23540782211 has 4 divisors (see below), whose sum is σ = 23756752800. Its totient is φ = 23324811624.

The previous prime is 23540782207. The next prime is 23540782267. The reversal of 23540782211 is 11228704532.

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 23540782211 - 2² = 23540782207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23540785211) 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, 107985131 + ... + 107985348.

It is an arithmetic number, because the mean of its divisors is an integer number (5939188200).

Almost surely, 2^23540782211 is an apocalyptic number.

23540782211 is a deficient number, since it is larger than the sum of its proper divisors (215970589).

23540782211 is a wasteful number, since it uses less digits than its factorization.

23540782211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215970588.

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 23540782211 in words is "twenty-three billion, five hundred forty million, seven hundred eighty-two thousand, two hundred eleven".