23115402442505 has 16 divisors (see below), whose sum is σ = 28700462563920. Its totient is φ = 17851245764352.

The previous prime is 23115402442501. The next prime is 23115402442591. The reversal of 23115402442505 is 50524420451132.

It can be written as a sum of positive squares in 8 ways, for example, as 963092965129 + 22152309477376 = 981373^2 + 4706624^2 .

It is a cyclic number.

It is not a de Polignac number, because 23115402442505 - 2² = 23115402442501 is a prime.

It is a super-2 number, since 2×23115402442505² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23115402442501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14460854 + ... + 15979583.

It is an arithmetic number, because the mean of its divisors is an integer number (1793778910245).

Almost surely, 2^{23115402442505} is an apocalyptic number.

It is an amenable number.

23115402442505 is a deficient number, since it is larger than the sum of its proper divisors (5585060121415).

23115402442505 is a wasteful number, since it uses less digits than its factorization.

23115402442505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30445708.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 23115402442505 its reverse (50524420451132), we get a palindrome (73639822893637).

The spelling of 23115402442505 in words is "twenty-three trillion, one hundred fifteen billion, four hundred two million, four hundred forty-two thousand, five hundred five".