1143566311255 has 32 divisors (see below), whose sum is σ = 1408698563328. Its totient is φ = 890934681600.

The previous prime is 1143566311243. The next prime is 1143566311313. The reversal of 1143566311255 is 5521136653411.

It is not a de Polignac number, because 1143566311255 - 2⁹ = 1143566310743 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 31 ways as a sum of consecutive naturals, for example, 15222085 + ... + 15297025.

It is an arithmetic number, because the mean of its divisors is an integer number (44021830104).

Almost surely, 2^{1143566311255} is an apocalyptic number.

1143566311255 is a deficient number, since it is larger than the sum of its proper divisors (265132252073).

1143566311255 is an equidigital number, since it uses as much as digits as its factorization.

1143566311255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75547.

The product of its digits is 324000, while the sum is 43.

The spelling of 1143566311255 in words is "one trillion, one hundred forty-three billion, five hundred sixty-six million, three hundred eleven thousand, two hundred fifty-five".