255603553767 has 12 divisors (see below), whose sum is σ = 369651583080. Its totient is φ = 170196315408.

The previous prime is 255603553721. The next prime is 255603553781. The reversal of 255603553767 is 767355306552.

255603553767 is a `hidden beast` number, since 2 + 5 + 560 + 3 + 5 + 5 + 3 + 76 + 7 = 666.

It is not a de Polignac number, because 255603553767 - 2⁸ = 255603553511 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255603553717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17163292 + ... + 17178177.

It is an arithmetic number, because the mean of its divisors is an integer number (30804298590).

Almost surely, 2^255603553767 is an apocalyptic number.

255603553767 is a deficient number, since it is larger than the sum of its proper divisors (114048029313).

255603553767 is a wasteful number, since it uses less digits than its factorization.

255603553767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34342302 (or 34342299 counting only the distinct ones).

The product of its (nonzero) digits is 19845000, while the sum is 54.

The spelling of 255603553767 in words is "two hundred fifty-five billion, six hundred three million, five hundred fifty-three thousand, seven hundred sixty-seven".