234371721456 has 160 divisors (see below), whose sum is σ = 688884480000. Its totient is φ = 76263213312.

The previous prime is 234371721439. The next prime is 234371721461. The reversal of 234371721456 is 654127173432.

It is a happy number.

234371721456 is a `hidden beast` number, since 2 + 3 + 437 + 1 + 72 + 145 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4530585 + ... + 4582023.

It is an arithmetic number, because the mean of its divisors is an integer number (4305528000).

Almost surely, 2^234371721456 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 234371721456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344442240000).

234371721456 is an abundant number, since it is smaller than the sum of its proper divisors (454512758544).

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

234371721456 is a wasteful number, since it uses less digits than its factorization.

234371721456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51708 (or 51696 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

Adding to 234371721456 its reverse (654127173432), we get a palindrome (888498894888).

The spelling of 234371721456 in words is "two hundred thirty-four billion, three hundred seventy-one million, seven hundred twenty-one thousand, four hundred fifty-six".