23136320061 has 20 divisors (see below), whose sum is σ = 34576290144. Its totient is φ = 15417685800.

The previous prime is 23136320027. The next prime is 23136320087. The reversal of 23136320061 is 16002363132.

It is a happy number.

23136320061 is a `hidden beast` number, since 23 + 1 + 3 + 632 + 0 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 23136320061 - 2⁷ = 23136319933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23136320021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136056 + ... + 254526.

Almost surely, 2^23136320061 is an apocalyptic number.

It is an amenable number.

23136320061 is a deficient number, since it is larger than the sum of its proper divisors (11439970083).

23136320061 is a wasteful number, since it uses less digits than its factorization.

23136320061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120894 (or 120885 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 23136320061 its reverse (16002363132), we get a palindrome (39138683193).

The spelling of 23136320061 in words is "twenty-three billion, one hundred thirty-six million, three hundred twenty thousand, sixty-one".