265481087687 has 2 divisors, whose sum is σ = 265481087688. Its totient is φ = 265481087686.

The previous prime is 265481087617. The next prime is 265481087693. The reversal of 265481087687 is 786780184562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265481087687 - 2³⁶ = 196761610951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265481087617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132740543843 + 132740543844.

It is an arithmetic number, because the mean of its divisors is an integer number (132740543844).

Almost surely, 2^265481087687 is an apocalyptic number.

265481087687 is a deficient number, since it is larger than the sum of its proper divisors (1).

265481087687 is an equidigital number, since it uses as much as digits as its factorization.

265481087687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36126720, while the sum is 62.

The spelling of 265481087687 in words is "two hundred sixty-five billion, four hundred eighty-one million, eighty-seven thousand, six hundred eighty-seven".