255165656645 has 8 divisors (see below), whose sum is σ = 306220801056. Its totient is φ = 204117849936.

The previous prime is 255165656633. The next prime is 255165656671. The reversal of 255165656645 is 546656561552.

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 255165656645 - 2³⁴ = 237985787461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1757627 + ... + 1897256.

It is an arithmetic number, because the mean of its divisors is an integer number (38277600132).

Almost surely, 2^255165656645 is an apocalyptic number.

It is an amenable number.

255165656645 is a deficient number, since it is larger than the sum of its proper divisors (51055144411).

255165656645 is a wasteful number, since it uses less digits than its factorization.

255165656645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3668851.

The product of its digits is 32400000, while the sum is 56.

The spelling of 255165656645 in words is "two hundred fifty-five billion, one hundred sixty-five million, six hundred fifty-six thousand, six hundred forty-five".