23616121061 has 4 divisors (see below), whose sum is σ = 25432745772. Its totient is φ = 21799496352.

The previous prime is 23616121037. The next prime is 23616121063. The reversal of 23616121061 is 16012161632.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12626792161 + 10989328900 = 112369^2 + 104830^2 .

It is a cyclic number.

It is not a de Polignac number, because 23616121061 - 2²⁶ = 23549012197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23616121063) 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, 908312336 + ... + 908312361.

It is an arithmetic number, because the mean of its divisors is an integer number (6358186443).

Almost surely, 2^23616121061 is an apocalyptic number.

It is an amenable number.

23616121061 is a deficient number, since it is larger than the sum of its proper divisors (1816624711).

23616121061 is a wasteful number, since it uses less digits than its factorization.

23616121061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816624710.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 23616121061 its reverse (16012161632), we get a palindrome (39628282693).

The spelling of 23616121061 in words is "twenty-three billion, six hundred sixteen million, one hundred twenty-one thousand, sixty-one".