260505237887 has 2 divisors, whose sum is σ = 260505237888. Its totient is φ = 260505237886.

The previous prime is 260505237871. The next prime is 260505237913. The reversal of 260505237887 is 788732505062.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260505237887 - 2⁴ = 260505237871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260505237287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130252618943 + 130252618944.

It is an arithmetic number, because the mean of its divisors is an integer number (130252618944).

Almost surely, 2^260505237887 is an apocalyptic number.

260505237887 is a deficient number, since it is larger than the sum of its proper divisors (1).

260505237887 is an equidigital number, since it uses as much as digits as its factorization.

260505237887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 260505237887 in words is "two hundred sixty billion, five hundred five million, two hundred thirty-seven thousand, eight hundred eighty-seven".