255551946417 has 24 divisors (see below), whose sum is σ = 388578621600. Its totient is φ = 161392877568.

The previous prime is 255551946409. The next prime is 255551946421. The reversal of 255551946417 is 714649155552.

255551946417 is a `hidden beast` number, since 2 + 5 + 5 + 551 + 9 + 46 + 41 + 7 = 666.

It is not a de Polignac number, because 255551946417 - 2³ = 255551946409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255551945417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6459298 + ... + 6498740.

It is an arithmetic number, because the mean of its divisors is an integer number (16190775900).

Almost surely, 2^255551946417 is an apocalyptic number.

It is an amenable number.

255551946417 is a deficient number, since it is larger than the sum of its proper divisors (133026675183).

255551946417 is a wasteful number, since it uses less digits than its factorization.

255551946417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77357 (or 77354 counting only the distinct ones).

The product of its digits is 7560000, while the sum is 54.

The spelling of 255551946417 in words is "two hundred fifty-five billion, five hundred fifty-one million, nine hundred forty-six thousand, four hundred seventeen".