261450408983 has 2 divisors, whose sum is σ = 261450408984. Its totient is φ = 261450408982.

The previous prime is 261450408931. The next prime is 261450409009. The reversal of 261450408983 is 389804054162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261450408983 - 2²⁸ = 261181973527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261450408083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130725204491 + 130725204492.

It is an arithmetic number, because the mean of its divisors is an integer number (130725204492).

Almost surely, 2^261450408983 is an apocalyptic number.

261450408983 is a deficient number, since it is larger than the sum of its proper divisors (1).

261450408983 is an equidigital number, since it uses as much as digits as its factorization.

261450408983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 261450408983 in words is "two hundred sixty-one billion, four hundred fifty million, four hundred eight thousand, nine hundred eighty-three".