238053064661 has 2 divisors, whose sum is σ = 238053064662. Its totient is φ = 238053064660.

The previous prime is 238053064649. The next prime is 238053064807. The reversal of 238053064661 is 166460350832.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221944632100 + 16108432561 = 471110^2 + 126919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238053064661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238053064861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119026532330 + 119026532331.

It is an arithmetic number, because the mean of its divisors is an integer number (119026532331).

Almost surely, 2^238053064661 is an apocalyptic number.

It is an amenable number.

238053064661 is a deficient number, since it is larger than the sum of its proper divisors (1).

238053064661 is an equidigital number, since it uses as much as digits as its factorization.

238053064661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 238053064661 in words is "two hundred thirty-eight billion, fifty-three million, sixty-four thousand, six hundred sixty-one".