23516438042 has 8 divisors (see below), whose sum is σ = 35598278100. Its totient is φ = 11650345344.

The previous prime is 23516438041. The next prime is 23516438081. The reversal of 23516438042 is 24083461532.

It can be written as a sum of positive squares in 2 ways, for example, as 20655150961 + 2861287081 = 143719^2 + 53491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 23516437987 and 23516438005.

It is not an unprimeable number, because it can be changed into a prime (23516438041) 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, 53936567 + ... + 53937002.

Almost surely, 2^23516438042 is an apocalyptic number.

23516438042 is a deficient number, since it is larger than the sum of its proper divisors (12081840058).

23516438042 is a wasteful number, since it uses less digits than its factorization.

23516438042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107873680.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 23516438042 its reverse (24083461532), we get a palindrome (47599899574).

The spelling of 23516438042 in words is "twenty-three billion, five hundred sixteen million, four hundred thirty-eight thousand, forty-two".