234447664257 has 12 divisors (see below), whose sum is σ = 339474618340. Its totient is φ = 155916292608.

The previous prime is 234447664201. The next prime is 234447664267. The reversal of 234447664257 is 752466744432.

234447664257 is a `hidden beast` number, since 2 + 344 + 47 + 6 + 6 + 4 + 257 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 109074309696 + 125373354561 = 330264^2 + 354081^2 .

It is not a de Polignac number, because 234447664257 - 2¹¹ = 234447662209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234447664267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31841968 + ... + 31849329.

Almost surely, 2^234447664257 is an apocalyptic number.

It is an amenable number.

234447664257 is a deficient number, since it is larger than the sum of its proper divisors (105026954083).

234447664257 is a wasteful number, since it uses less digits than its factorization.

234447664257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63691712 (or 63691709 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 54.

It can be divided in two parts, 234447 and 664257, that added together give a square (898704 = 948²).

The spelling of 234447664257 in words is "two hundred thirty-four billion, four hundred forty-seven million, six hundred sixty-four thousand, two hundred fifty-seven".