11540054622421 has 4 divisors (see below), whose sum is σ = 12427751131852. Its totient is φ = 10652358112992.

The previous prime is 11540054622293. The next prime is 11540054622443. The reversal of 11540054622421 is 12422645004511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4384777368196 + 7155277254225 = 2093986^2 + 2674935^2 .

It is a cyclic number.

It is not a de Polignac number, because 11540054622421 - 2⁷ = 11540054622293 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 (11540054622821) 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, 443848254696 + ... + 443848254721.

It is an arithmetic number, because the mean of its divisors is an integer number (3106937782963).

Almost surely, 2^{11540054622421} is an apocalyptic number.

It is an amenable number.

11540054622421 is a deficient number, since it is larger than the sum of its proper divisors (887696509431).

11540054622421 is an equidigital number, since it uses as much as digits as its factorization.

11540054622421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887696509430.

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 11540054622421 its reverse (12422645004511), we get a palindrome (23962699626932).

The spelling of 11540054622421 in words is "eleven trillion, five hundred forty billion, fifty-four million, six hundred twenty-two thousand, four hundred twenty-one".