3541540266421 has 4 divisors (see below), whose sum is σ = 3541798353472. Its totient is φ = 3541282179372.

The previous prime is 3541540266403. The next prime is 3541540266443. The reversal of 3541540266421 is 1246620451453.

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 3541540266421 - 2⁹ = 3541540265909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3541540266721) by changing a digit.

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, 129022941 + ... + 129050386.

It is an arithmetic number, because the mean of its divisors is an integer number (885449588368).

Almost surely, 2^{3541540266421} is an apocalyptic number.

It is an amenable number.

3541540266421 is a deficient number, since it is larger than the sum of its proper divisors (258087051).

3541540266421 is a wasteful number, since it uses less digits than its factorization.

3541540266421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258087050.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 3541540266421 in words is "three trillion, five hundred forty-one billion, five hundred forty million, two hundred sixty-six thousand, four hundred twenty-one".