1101440425543 has 4 divisors (see below), whose sum is σ = 1128304826208. Its totient is φ = 1074576024880.

The previous prime is 1101440425499. The next prime is 1101440425583. The reversal of 1101440425543 is 3455240441011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101440425543 - 2²¹ = 1101438328391 is a prime.

It is a super-2 number, since 2×1101440425543² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101440425499 and 1101440425508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101440425583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13432200271 + ... + 13432200352.

It is an arithmetic number, because the mean of its divisors is an integer number (282076206552).

Almost surely, 2^{1101440425543} is an apocalyptic number.

1101440425543 is a deficient number, since it is larger than the sum of its proper divisors (26864400665).

1101440425543 is an equidigital number, since it uses as much as digits as its factorization.

1101440425543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26864400664.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 1101440425543 its reverse (3455240441011), we get a palindrome (4556680866554).

The spelling of 1101440425543 in words is "one trillion, one hundred one billion, four hundred forty million, four hundred twenty-five thousand, five hundred forty-three".