23181230064 has 40 divisors (see below), whose sum is σ = 62488536192. Its totient is φ = 7391116480.

The previous prime is 23181230057. The next prime is 23181230159. The reversal of 23181230064 is 46003218132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10497642 + ... + 10499849.

Almost surely, 2^23181230064 is an apocalyptic number.

23181230064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23181230064 is an abundant number, since it is smaller than the sum of its proper divisors (39307306128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23181230064 is a wasteful number, since it uses less digits than its factorization.

23181230064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20997525 (or 20997519 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 23181230064 its reverse (46003218132), we get a palindrome (69184448196).

The spelling of 23181230064 in words is "twenty-three billion, one hundred eighty-one million, two hundred thirty thousand, sixty-four".