1233340555543 has 16 divisors (see below), whose sum is σ = 1271437552000. Its totient is φ = 1195676082720.

The previous prime is 1233340555511. The next prime is 1233340555609. The reversal of 1233340555543 is 3455550433321.

It is a cyclic number.

It is not a de Polignac number, because 1233340555543 - 2⁵ = 1233340555511 is a prime.

It is a super-2 number, since 2×1233340555543² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

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 1233340555543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233340555243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24474553 + ... + 24524893.

It is an arithmetic number, because the mean of its divisors is an integer number (79464847000).

Almost surely, 2^{1233340555543} is an apocalyptic number.

1233340555543 is a deficient number, since it is larger than the sum of its proper divisors (38096996457).

1233340555543 is a wasteful number, since it uses less digits than its factorization.

1233340555543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54622.

The product of its (nonzero) digits is 1620000, while the sum is 43.

Adding to 1233340555543 its reverse (3455550433321), we get a palindrome (4688890988864).

The spelling of 1233340555543 in words is "one trillion, two hundred thirty-three billion, three hundred forty million, five hundred fifty-five thousand, five hundred forty-three".