11551541650541 has 8 divisors (see below), whose sum is σ = 11986052137080. Its totient is φ = 11123468356608.

The previous prime is 11551541650531. The next prime is 11551541650553. The reversal of 11551541650541 is 14505614515511.

It can be written as a sum of positive squares in 4 ways, for example, as 2308056754441 + 9243484896100 = 1519229^2 + 3040310^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11551541650541 - 2⁴² = 7153495139437 is a prime.

It is a super-2 number, since 2×11551541650541² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11551541650492 and 11551541650501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551541650501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609294496 + ... + 1609301673.

It is an arithmetic number, because the mean of its divisors is an integer number (1498256517135).

Almost surely, 2^{11551541650541} is an apocalyptic number.

It is an amenable number.

11551541650541 is a deficient number, since it is larger than the sum of its proper divisors (434510486539).

11551541650541 is an equidigital number, since it uses as much as digits as its factorization.

11551541650541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218596303.

The product of its (nonzero) digits is 300000, while the sum is 44.

The spelling of 11551541650541 in words is "eleven trillion, five hundred fifty-one billion, five hundred forty-one million, six hundred fifty thousand, five hundred forty-one".