255587554432561 has 8 divisors (see below), whose sum is σ = 276552629079104. Its totient is φ = 234808836005520.

The previous prime is 255587554432549. The next prime is 255587554432583. The reversal of 255587554432561 is 165234455785552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255587554432561 - 2¹¹ = 255587554430513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255587554432061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46589052021 + ... + 46589057506.

It is an arithmetic number, because the mean of its divisors is an integer number (34569078634888).

Almost surely, 2^{255587554432561} is an apocalyptic number.

It is an amenable number.

255587554432561 is a deficient number, since it is larger than the sum of its proper divisors (20965074646543).

255587554432561 is a wasteful number, since it uses less digits than its factorization.

255587554432561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93178109751.

The product of its digits is 1008000000, while the sum is 67.

The spelling of 255587554432561 in words is "two hundred fifty-five trillion, five hundred eighty-seven billion, five hundred fifty-four million, four hundred thirty-two thousand, five hundred sixty-one".