2543819443655 has 32 divisors (see below), whose sum is σ = 3501443433984. Its totient is φ = 1737946544256.

The previous prime is 2543819443639. The next prime is 2543819443703. The reversal of 2543819443655 is 5563449183452.

It is a cyclic number.

It is not a de Polignac number, because 2543819443655 - 2⁴ = 2543819443639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2543819443594 and 2543819443603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125159324 + ... + 125179646.

It is an arithmetic number, because the mean of its divisors is an integer number (109420107312).

Almost surely, 2^{2543819443655} is an apocalyptic number.

2543819443655 is a deficient number, since it is larger than the sum of its proper divisors (957623990329).

2543819443655 is a wasteful number, since it uses less digits than its factorization.

2543819443655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33255.

The product of its digits is 62208000, while the sum is 59.

The spelling of 2543819443655 in words is "two trillion, five hundred forty-three billion, eight hundred nineteen million, four hundred forty-three thousand, six hundred fifty-five".