255732661543 has 8 divisors (see below), whose sum is σ = 257259132000. Its totient is φ = 254209857408.

The previous prime is 255732661519. The next prime is 255732661571. The reversal of 255732661543 is 345166237552.

It is a happy number.

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 255732661543 - 2⁵ = 255732661511 is a prime.

It is a super-2 number, since 2×255732661543² (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 (255732661343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776598 + ... + 1055731.

It is an arithmetic number, because the mean of its divisors is an integer number (32157391500).

Almost surely, 2^255732661543 is an apocalyptic number.

255732661543 is a deficient number, since it is larger than the sum of its proper divisors (1526470457).

255732661543 is a wasteful number, since it uses less digits than its factorization.

255732661543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833161.

The product of its digits is 4536000, while the sum is 49.

The spelling of 255732661543 in words is "two hundred fifty-five billion, seven hundred thirty-two million, six hundred sixty-one thousand, five hundred forty-three".