261360090611153 has 8 divisors (see below), whose sum is σ = 261380751777000. Its totient is φ = 261339430272768.

The previous prime is 261360090611119. The next prime is 261360090611273. The reversal of 261360090611153 is 351116090063162.

It can be written as a sum of positive squares in 4 ways, for example, as 12781604568769 + 248578486042384 = 3575137^2 + 15766372^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261360090611153 - 2⁸ = 261360090610897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261360090611453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729736403 + ... + 730094471.

It is an arithmetic number, because the mean of its divisors is an integer number (32672593972125).

Almost surely, 2^{261360090611153} is an apocalyptic number.

It is an amenable number.

261360090611153 is a deficient number, since it is larger than the sum of its proper divisors (20661165847).

261360090611153 is a wasteful number, since it uses less digits than its factorization.

261360090611153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413731.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 261360090611153 in words is "two hundred sixty-one trillion, three hundred sixty billion, ninety million, six hundred eleven thousand, one hundred fifty-three".