1143547486781 has 16 divisors (see below), whose sum is σ = 1364240565504. Its totient is φ = 937218378624.

The previous prime is 1143547486721. The next prime is 1143547486793. The reversal of 1143547486781 is 1876847453411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143547486781 is a prime.

It is a super-2 number, since 2×1143547486781² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143547486781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143547486721) 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 15 ways as a sum of consecutive naturals, for example, 885176 + ... + 1752321.

It is an arithmetic number, because the mean of its divisors is an integer number (85265035344).

Almost surely, 2^{1143547486781} is an apocalyptic number.

It is an amenable number.

1143547486781 is a deficient number, since it is larger than the sum of its proper divisors (220693078723).

1143547486781 is a wasteful number, since it uses less digits than its factorization.

1143547486781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640220.

The product of its digits is 18063360, while the sum is 59.

The spelling of 1143547486781 in words is "one trillion, one hundred forty-three billion, five hundred forty-seven million, four hundred eighty-six thousand, seven hundred eighty-one".