255661365424 has 10 divisors (see below), whose sum is σ = 495343895540. Its totient is φ = 127830682704.

The previous prime is 255661365409. The next prime is 255661365439. The reversal of 255661365424 is 424563166552.

255661365424 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (255661365409) and next prime (255661365439).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7989417654 + ... + 7989417685.

It is an arithmetic number, because the mean of its divisors is an integer number (49534389554).

Almost surely, 2^255661365424 is an apocalyptic number.

It is an amenable number.

255661365424 is a deficient number, since it is larger than the sum of its proper divisors (239682530116).

255661365424 is a wasteful number, since it uses less digits than its factorization.

255661365424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15978835347 (or 15978835341 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 49.

The spelling of 255661365424 in words is "two hundred fifty-five billion, six hundred sixty-one million, three hundred sixty-five thousand, four hundred twenty-four".