1543241856655 has 4 divisors (see below), whose sum is σ = 1851890227992. Its totient is φ = 1234593485320.

The previous prime is 1543241856613. The next prime is 1543241856679. The reversal of 1543241856655 is 5566581423451.

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

It is not a de Polignac number, because 1543241856655 - 2¹¹ = 1543241854607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1543241856596 and 1543241856605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154324185661 + ... + 154324185670.

It is an arithmetic number, because the mean of its divisors is an integer number (462972556998).

Almost surely, 2^{1543241856655} is an apocalyptic number.

1543241856655 is a deficient number, since it is larger than the sum of its proper divisors (308648371337).

1543241856655 is an equidigital number, since it uses as much as digits as its factorization.

1543241856655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308648371336.

The product of its digits is 17280000, while the sum is 55.

The spelling of 1543241856655 in words is "one trillion, five hundred forty-three billion, two hundred forty-one million, eight hundred fifty-six thousand, six hundred fifty-five".