233532551040 has 128 divisors (see below), whose sum is σ = 744678295200. Its totient is φ = 62250811392.

The previous prime is 233532551027. The next prime is 233532551041. The reversal of 233532551040 is 40155235332.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 233532550992 and 233532551010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233532551041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5140264 + ... + 5185496.

Almost surely, 2^233532551040 is an apocalyptic number.

233532551040 is a gapful number since it is divisible by the number (20) 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 233532551040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372339147600).

233532551040 is an abundant number, since it is smaller than the sum of its proper divisors (511145744160).

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

233532551040 is a wasteful number, since it uses less digits than its factorization.

233532551040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47944 (or 47932 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 233532551040 its reverse (40155235332), we get a palindrome (273687786372).

The spelling of 233532551040 in words is "two hundred thirty-three billion, five hundred thirty-two million, five hundred fifty-one thousand, forty".