11055506542621 has 2 divisors, whose sum is σ = 11055506542622. Its totient is φ = 11055506542620.

The previous prime is 11055506542609. The next prime is 11055506542627. The reversal of 11055506542621 is 12624560555011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8854850004100 + 2200656538521 = 2975710^2 + 1483461^2 .

It is a cyclic number.

It is not a de Polignac number, because 11055506542621 - 2⁵ = 11055506542589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11055506542627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5527753271310 + 5527753271311.

It is an arithmetic number, because the mean of its divisors is an integer number (5527753271311).

Almost surely, 2^{11055506542621} is an apocalyptic number.

It is an amenable number.

11055506542621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11055506542621 is an equidigital number, since it uses as much as digits as its factorization.

11055506542621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 11055506542621 in words is "eleven trillion, fifty-five billion, five hundred six million, five hundred forty-two thousand, six hundred twenty-one".