255653361567 has 8 divisors (see below), whose sum is σ = 378745720880. Its totient is φ = 170435574360.

The previous prime is 255653361529. The next prime is 255653361569. The reversal of 255653361567 is 765163356552.

It is a happy number.

255653361567 is a `hidden beast` number, since 2 + 5 + 56 + 533 + 6 + 1 + 56 + 7 = 666.

It is not a de Polignac number, because 255653361567 - 2⁶ = 255653361503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255653361569) 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, 4734321484 + ... + 4734321537.

It is an arithmetic number, because the mean of its divisors is an integer number (47343215110).

Almost surely, 2^255653361567 is an apocalyptic number.

255653361567 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

255653361567 is a deficient number, since it is larger than the sum of its proper divisors (123092359313).

255653361567 is an equidigital number, since it uses as much as digits as its factorization.

255653361567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468643030 (or 9468643024 counting only the distinct ones).

The product of its digits is 17010000, while the sum is 54.

The spelling of 255653361567 in words is "two hundred fifty-five billion, six hundred fifty-three million, three hundred sixty-one thousand, five hundred sixty-seven".