261890703367 has 2 divisors, whose sum is σ = 261890703368. Its totient is φ = 261890703366.

The previous prime is 261890703343. The next prime is 261890703409. The reversal of 261890703367 is 763307098162.

It is a happy number.

261890703367 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 is a cyclic number.

It is not a de Polignac number, because 261890703367 - 2¹⁹ = 261890179079 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261890703307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130945351683 + 130945351684.

It is an arithmetic number, because the mean of its divisors is an integer number (130945351684).

Almost surely, 2^261890703367 is an apocalyptic number.

261890703367 is a deficient number, since it is larger than the sum of its proper divisors (1).

261890703367 is an equidigital number, since it uses as much as digits as its factorization.

261890703367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 261890703367 in words is "two hundred sixty-one billion, eight hundred ninety million, seven hundred three thousand, three hundred sixty-seven".