2563881258543 has 8 divisors (see below), whose sum is σ = 3729281830656. Its totient is φ = 1553867429400.

The previous prime is 2563881258541. The next prime is 2563881258569. The reversal of 2563881258543 is 3458521883652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2563881258543 - 2¹ = 2563881258541 is a prime.

It is a super-2 number, since 2×2563881258543² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563881258541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38846685703 + ... + 38846685768.

It is an arithmetic number, because the mean of its divisors is an integer number (466160228832).

Almost surely, 2^{2563881258543} is an apocalyptic number.

2563881258543 is a deficient number, since it is larger than the sum of its proper divisors (1165400572113).

2563881258543 is a wasteful number, since it uses less digits than its factorization.

2563881258543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77693371485.

The product of its digits is 55296000, while the sum is 60.

The spelling of 2563881258543 in words is "two trillion, five hundred sixty-three billion, eight hundred eighty-one million, two hundred fifty-eight thousand, five hundred forty-three".