23138470908 has 288 divisors, whose sum is σ = 74214766080. Its totient is φ = 6194603520.

The previous prime is 23138470829. The next prime is 23138470913. The reversal of 23138470908 is 80907483132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27978391 + ... + 27979217.

It is an arithmetic number, because the mean of its divisors is an integer number (257690160).

Almost surely, 2^23138470908 is an apocalyptic number.

23138470908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23138470908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37107383040).

23138470908 is an abundant number, since it is smaller than the sum of its proper divisors (51076295172).

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

23138470908 is a wasteful number, since it uses less digits than its factorization.

23138470908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 23138470908 in words is "twenty-three billion, one hundred thirty-eight million, four hundred seventy thousand, nine hundred eight".