235237648576681 has 9 divisors (see below), whose sum is σ = 237911846748823. Its totient is φ = 232593179233360.

The previous prime is 235237648576673. The next prime is 235237648576691. The reversal of 235237648576681 is 186675846732532.

The square root of 235237648576681 is 15337459.

It is a perfect power (a square), and thus also a powerful number.

235237648576681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 45170617786281 + 190067030790400 = 6720909^2 + 13786480^2 .

It is not a de Polignac number, because 235237648576681 - 2³ = 235237648576673 is a prime.

It is a super-2 number, since 2×235237648576681² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235237648576691) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1364947686 + ... + 1365120016.

Almost surely, 2^{235237648576681} is an apocalyptic number.

235237648576681 is the 15337459-th square number.

235237648576681 is the 7668730-th centered octagonal number.

It is an amenable number.

235237648576681 is a deficient number, since it is larger than the sum of its proper divisors (2674198172142).

235237648576681 is an frugal number, since it uses more digits than its factorization.

235237648576681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344840 (or 172420 counting only the distinct ones).

The product of its digits is 2438553600, while the sum is 73.

The spelling of 235237648576681 in words is "two hundred thirty-five trillion, two hundred thirty-seven billion, six hundred forty-eight million, five hundred seventy-six thousand, six hundred eighty-one".