23553881688 has 64 divisors (see below), whose sum is σ = 60028881120. Its totient is φ = 7699507200.

The previous prime is 23553881641. The next prime is 23553881719. The reversal of 23553881688 is 88618835532.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469498 + ... + 517238.

Almost surely, 2^23553881688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23553881688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30014440560).

23553881688 is an abundant number, since it is smaller than the sum of its proper divisors (36474999432).

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

23553881688 is a wasteful number, since it uses less digits than its factorization.

23553881688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48148 (or 48144 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 57.

The spelling of 23553881688 in words is "twenty-three billion, five hundred fifty-three million, eight hundred eighty-one thousand, six hundred eighty-eight".