233406023640 has 256 divisors, whose sum is σ = 742249267200. Its totient is φ = 58553280000.

The previous prime is 233406023603. The next prime is 233406023657. The reversal of 233406023640 is 46320604332.

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 63 ways as a sum of consecutive naturals, for example, 310793265 + ... + 310794015.

It is an arithmetic number, because the mean of its divisors is an integer number (2899411200).

Almost surely, 2^233406023640 is an apocalyptic number.

233406023640 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 233406023640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371124633600).

233406023640 is an abundant number, since it is smaller than the sum of its proper divisors (508843243560).

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

233406023640 is a wasteful number, since it uses less digits than its factorization.

233406023640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 233406023640 its reverse (46320604332), we get a palindrome (279726627972).

The spelling of 233406023640 in words is "two hundred thirty-three billion, four hundred six million, twenty-three thousand, six hundred forty".