255661253783 has 8 divisors (see below), whose sum is σ = 275550098208. Its totient is φ = 235804208544.

The previous prime is 255661253741. The next prime is 255661253791. The reversal of 255661253783 is 387352166552.

255661253783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 255661253783 - 2²² = 255657059479 is a prime.

It is a super-2 number, since 2×255661253783² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255661253083) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 7933091 + ... + 7965252.

It is an arithmetic number, because the mean of its divisors is an integer number (34443762276).

Almost surely, 2^255661253783 is an apocalyptic number.

255661253783 is a deficient number, since it is larger than the sum of its proper divisors (19888844425).

255661253783 is a wasteful number, since it uses less digits than its factorization.

255661253783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15899593.

The product of its digits is 9072000, while the sum is 53.

The spelling of 255661253783 in words is "two hundred fifty-five billion, six hundred sixty-one million, two hundred fifty-three thousand, seven hundred eighty-three".