2541798541421 has 4 divisors (see below), whose sum is σ = 2579735833152. Its totient is φ = 2503861249692.

The previous prime is 2541798541393. The next prime is 2541798541423. The reversal of 2541798541421 is 1241458971452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2541798541421 - 2²² = 2541794347117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541798541423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18968645765 + ... + 18968645898.

It is an arithmetic number, because the mean of its divisors is an integer number (644933958288).

Almost surely, 2^{2541798541421} is an apocalyptic number.

It is an amenable number.

2541798541421 is a deficient number, since it is larger than the sum of its proper divisors (37937291731).

2541798541421 is an equidigital number, since it uses as much as digits as its factorization.

2541798541421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37937291730.

The product of its digits is 3225600, while the sum is 53.

The spelling of 2541798541421 in words is "two trillion, five hundred forty-one billion, seven hundred ninety-eight million, five hundred forty-one thousand, four hundred twenty-one".