127543840043 has 4 divisors (see below), whose sum is σ = 129291016008. Its totient is φ = 125796664080.

The previous prime is 127543840031. The next prime is 127543840139. The reversal of 127543840043 is 340048345721.

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 127543840043 - 2⁶ = 127543839979 is a prime.

It is a super-2 number, since 2×127543840043² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127543840013) 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 3 ways as a sum of consecutive naturals, for example, 873587873 + ... + 873588018.

It is an arithmetic number, because the mean of its divisors is an integer number (32322754002).

Almost surely, 2^127543840043 is an apocalyptic number.

127543840043 is a deficient number, since it is larger than the sum of its proper divisors (1747175965).

127543840043 is an equidigital number, since it uses as much as digits as its factorization.

127543840043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747175964.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 127543840043 in words is "one hundred twenty-seven billion, five hundred forty-three million, eight hundred forty thousand, forty-three".