255976980487 has 2 divisors, whose sum is σ = 255976980488. Its totient is φ = 255976980486.

The previous prime is 255976980461. The next prime is 255976980491. The reversal of 255976980487 is 784089679552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255976980487 - 2¹⁵ = 255976947719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255976980587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127988490243 + 127988490244.

It is an arithmetic number, because the mean of its divisors is an integer number (127988490244).

Almost surely, 2^255976980487 is an apocalyptic number.

255976980487 is a deficient number, since it is larger than the sum of its proper divisors (1).

255976980487 is an equidigital number, since it uses as much as digits as its factorization.

255976980487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 304819200, while the sum is 70.

The spelling of 255976980487 in words is "two hundred fifty-five billion, nine hundred seventy-six million, nine hundred eighty thousand, four hundred eighty-seven".