102440440543 has 4 divisors (see below), whose sum is σ = 117074789200. Its totient is φ = 87806091888.

The previous prime is 102440440541. The next prime is 102440440547. The reversal of 102440440543 is 345044044201.

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 102440440543 - 2¹ = 102440440541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102440440541) 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, 7317174318 + ... + 7317174331.

It is an arithmetic number, because the mean of its divisors is an integer number (29268697300).

Almost surely, 2^102440440543 is an apocalyptic number.

102440440543 is a deficient number, since it is larger than the sum of its proper divisors (14634348657).

102440440543 is an equidigital number, since it uses as much as digits as its factorization.

102440440543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14634348656.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 102440440543 its reverse (345044044201), we get a palindrome (447484484744).

The spelling of 102440440543 in words is "one hundred two billion, four hundred forty million, four hundred forty thousand, five hundred forty-three".