2541562281638 has 8 divisors (see below), whose sum is σ = 3812360156832. Its totient is φ = 1270775562696.

The previous prime is 2541562281623. The next prime is 2541562281673. The reversal of 2541562281638 is 8361822651452.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2541562281638.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2194145 + ... + 3146012.

It is an arithmetic number, because the mean of its divisors is an integer number (476545019604).

Almost surely, 2^{2541562281638} is an apocalyptic number.

2541562281638 is a deficient number, since it is larger than the sum of its proper divisors (1270797875194).

2541562281638 is a wasteful number, since it uses less digits than its factorization.

2541562281638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5578126.

The product of its digits is 5529600, while the sum is 53.

The spelling of 2541562281638 in words is "two trillion, five hundred forty-one billion, five hundred sixty-two million, two hundred eighty-one thousand, six hundred thirty-eight".