261457330702153 has 2 divisors, whose sum is σ = 261457330702154. Its totient is φ = 261457330702152.

The previous prime is 261457330702147. The next prime is 261457330702261. The reversal of 261457330702153 is 351207033754162.

261457330702153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249001993361209 + 12455337340944 = 15779797^2 + 3529212^2 .

It is a cyclic number.

It is not a de Polignac number, because 261457330702153 - 2⁴⁵ = 226272958613321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261457330702097 and 261457330702106.

It is not a weakly prime, because it can be changed into another prime (261457330702453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130728665351076 + 130728665351077.

It is an arithmetic number, because the mean of its divisors is an integer number (130728665351077).

Almost surely, 2^{261457330702153} is an apocalyptic number.

It is an amenable number.

261457330702153 is a deficient number, since it is larger than the sum of its proper divisors (1).

261457330702153 is an equidigital number, since it uses as much as digits as its factorization.

261457330702153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 49.

The spelling of 261457330702153 in words is "two hundred sixty-one trillion, four hundred fifty-seven billion, three hundred thirty million, seven hundred two thousand, one hundred fifty-three".